Best Costco Full Mattress - Top Picks & Guide

Ever felt like Goldilocks searching for the perfect mattress? You know, not too hard, not too soft, but just right? Finding that ideal spot for sleep can be a real challenge, especially when you’re looking at Costco’s full-size mattress options. It’s easy to get lost in all the choices and wonder which one will give you the best sleep without breaking the bank.

Choosing a mattress is a big deal. It affects how you feel every single day. You want to wake up feeling rested and ready to go, not groggy and sore. But with so many different brands and types of mattresses at Costco, it’s tough to know where to start. You might worry about spending your hard-earned money on something that doesn’t feel good or doesn’t last.

That’s where this guide comes in! We’re going to dive deep into Costco’s full mattress selection. We’ll talk about what makes a good mattress and help you understand the different features to look for. By the end, you’ll feel much more confident about picking a Costco full mattress that’s perfect for you and your sleep needs.

Top Costco Full Mattress Recommendations

No. 1

EGOHOME Full Size Memory Foam Mattress 10 Inch, Green Tea, Medium Firm | Bed Mattress in A Box, Cooling Green Tea Gel, Pressure Relief, CertiPUR-US Certified, Fiberglass Free, 75''L x 54''W, White

Suitable Support for Everyone and All Sleep Positions: Matress of EGOHOME has a high degree of fit with body curve, it will deform with changes in sleeping posture, filling the gap between your body and the mattress, advantage for your spine and promoting smooth blood circulation throughout the body. It also reduces the noise interference caused by turning over, effectively promotes perfect deep sleep.
Refreshing Cool Sensation: The process we use makes the mattress have a special bubble hole structure, which has good breathable airflow to keep a peaceful sleep. We also infuse it with pure natural green tea gel, which helps regulate body temperature and keeps body cool and fresh.
Stable and Reliable Quality: The internal molecular structure of the memory foam used in this mattress is very stable. At room temperatures ranging from 4°C to 30°C, the softness and hardness are not affected by the temperature and will always remain at a moderate level, allowing you to enjoy the comfort of memory foam under most conditions.
Globally Diversified Origins: Our products are backed by a stable and highly diversified supply chain, with sourcing origins spanning the United States, Laos, Indonesia, and other countries.

SaleNo. 2

MOLPHIT Double Mattress,12 Inch Full Mattrress with 7-Zone Hybrid Double Bed Mattresses,Pocket Sprung with Medium Firm for Body Support & Pressure Relief - 75 * 54in

【7-Zone Body Support】Experience balanced, full-body support with Molphit’s advanced pocket spring system. Individually wrapped coils gently cushion your head, neck, shoulders, back, waist, hips, and legs, adapting to your movements to maintain healthy spinal alignment throughout the night. The firm yet comfortable design relieves pressure points and helps reduce back discomfort for deeper, more restorative sleep.
【Motion-Free Sleep】Enjoy undisturbed rest with Molphit’s hybrid memory foam and pocket spring construction. Each coil moves independently to contour to your body while effectively isolating motion, so you won’t feel your partner’s movements—ensuring peaceful nights and uninterrupted sleep.
【Personalized Comfort】Designed for versatile comfort, this medium-firm mattress adapts seamlessly to all sleeping positions. The breathable, skin-friendly knit fabric works together with responsive foam and individually wrapped coils to deliver tailored support and enhanced airflow. Ideal for couples, light sleepers, and those seeking a quiet, stable sleep surface.
【Mattress in a Box】Conveniently vacuum-compressed, sealed, and rolled for easy delivery and setup. Simply unbox, allow it to fully expand, and enjoy supportive comfort within 76 hours. Compatible with most standard bed frames for hassle-free installation.
【Buy with Confidence】Crafted with high-quality foam and durable support layers, this mattress delivers consistent comfort night after night. As your body may need time to adjust to a new sleep surface, every Molphit mattress includes a risk-free trial period—giving you peace of mind and time to find your perfect comfort level.

No. 3

ERORVX 12 Inch Full Size Mattress, Hybrid Bed Mattress in a Box, 75" x 54" | Memory Foam Hybrid, Back Support & Pressure Relief, Motion Isolation, CertiPUR-US Foam, Medium Firm, Colchones Full

Medium-Firm Feel, CertiPUR-US Certified: Enjoy the universally loved feel of a medium firm full mattress. The premium foam layers are CertiPUR-US certified, ensuring they are made without harmful chemicals and are durable enough to prevent sagging. This full size mattress firm support is engineered for both comfort and longevity, making it a superior full bed mattress choice
Superior Motion Isolation for Undisturbed Sleep: Enjoy uninterrupted rest, even with a partner. The inherent properties of the adaptive memory foam in this full mattress excel at absorbing movement. When your partner shifts or gets out of bed, the vibrations are isolated to their side of the mattress full size, drastically reducing motion transfer across the surface. This ensures you both can enjoy a deeper, more peaceful night's sleep
Premium Body-Contouring Memory Foam: Discover deep, pressure-relieving comfort with our 12 inch full size mattress. Designed with multiple layers of adaptive memory foam, this memory foam full mattress expertly cradles your body's unique contours to alleviate pressure on pressure points like your shoulders, hips, and back. It provides the classic, hugging feel of a premium full size memory foam mattress for unparalleled relaxation
Convenient Bed-in-a-Box Delivery: Enjoy maximum convenience. Your new mattress in a box full arrives at your doorstep in a compact, easy-to-handle box. The full mattress in a box is vacuum-packed and rolled. Just move it to your room, unbox, cut the protective wrap, and watch your full size mattress in a box expand to its original, plush form-ready to use with absolutely no setup required
Easy Setup and Expansion Process: The full mattress is compressed into a sturdy plastic bag and protected by a cardboard box. When you need to use it, just open the plastic bag and unwrap the mattress. The full size mattress will return to its original shape within 8 hours. Note that it takes about 48 hours for the mattress to get rid of its odor

No. 4

Novilla 12 Inch Full Size Mattress, Hybrid Gel Memory Foam Mattress Full | Pocketed Coils & & Nylon Cooling Fabric for Motion Isolation & Pain Relief Comfort CertiPUR-US Certified

【Targeted Support Zones for Balanced Alignment】 The full mattress is built with hundreds of individually pocketed coils, each working independently to deliver precise, zoned support and significantly reduce motion transfer. These mattress full size targeted support zones help maintain spinal alignment, improve sleep stability, and create a more personalized rest experience for a wide range of sleepers.
【Cooling Gel Memory Foam for Pressure-Free Comfort】 This 12 Inch full size mattress combines gel-infused memory foam with a soft comfort foam layer to create a refreshing, pressure-relieving sleep surface. The comfort layer cushions shoulders, hips and pressure-sensitive points, easing tension and reducing tossing and turning. Cooling gel actively disperses heat while adaptive foam contours naturally for deeper, restorative rest.
【Cool-Touch Fabric with Breathable Softness】 The surface of the full bed mattress is crafted from premium nylon cool-touch knit fabric engineered for breathable softness and rapid moisture wicking. Smooth to the touch yet highly durable, the cover enhances airflow, regulates temperature, and adds a refined aesthetic that complements any modern bedroom.
【Reinforced Edge Comfort for Full Use】 Reinforced perimeter construction expands usable sleep area across the full hybrid mattress by preventing sag and roll-off. Whether sitting on the edge or stretching across the bed, the reinforced edge comfort ensures consistent support and confidence, maximizing both stability and surface area.
【Smart Mattress-in-a-Box for Effortless Setup】 The full size bed mattress arrives expertly compressed, rolled and sealed in a compact box for effortless delivery and setup. Designed for modern convenience, it fits easily through staircases and tight doorways; simply unbox, unroll and allow the mattress to expand to enjoy premium comfort without the hassle.

SaleNo. 5

AVAGA Full Size Mattress 10 Inch in a Box Hybird, CertiPUR-US | Mattresses Full Bed Memory Foam, Individual Pocket Springs, Fiberglass Free

FULL SIZE MATTRESS IN A BOX: Product Dimensions 75"L x 54"W x 10"Th. Every inch of our full mattress represents decades of craftsmanship—made with premium, fiberglass-free materials and certified for safety. From advanced pressure relief to cool, restorative rest, it's designed to turn every night into a deep, rejuvenating escape.
EASY SETUP AND UNIVERSAL FIT: Just unroll, unwrap, and watch your full-size mattress expands to shape. Please allow 48–72 hours for the hybrid mattress full to fully expand. And a friendly reminder: be cautious during bed mattress rapid unfurling. The full mattress in a box is designed to fit seamlessly with most common bed frames — from traditional box springs to modern platforms, bunk beds, and even the floor.
SUPERIOR COMFORT: Hybrid construction combines individually wrapped pocket coils with premium memory foam—coils contour to your body for targeted support, while foam relieves pressure points. Breathable design enhances airflow to keep you cool. Experience balanced comfort that cradles every curve without sacrificing support.
RESTFUL SLEEP SUPPORT: Medium firm hybrid design balances comfort and spinal alignment. Advanced foam layers regulate temperature to prevent overheating, while motion-isolating construction minimizes partner disturbances—so you wake up refreshed and energized.
QUALITY & PEACE OF MIND: CertiPUR-US and Oeko-Tex Standard 100 certified for safety. Each mattress is factory-inspected under strict quality control before shipping. Backed by a 10-year support and dedicated customer support—we're here to help with any questions or feedback.

No. 6

Novilla 14 Inch Full Memory Foam Mattress, Gel Memory Foam for Cooling | Cooling Night Sleep & Pressure Relief, CertiPUR-US Certified

Cooling & Breathable - The Novilla 14 inch full size mattress includes NanoGel memory foam and wave-cut foam, which increases breathability by 30%, promotes airflow and provides a refreshing cooling effect, thereby delivering an enhanced sleep experience. Enjoy all-night comfort and relaxation, say goodbye hot and restless nights.
Comfort Support - Novilla 14 inch full mattress features 3 foam layers, providing superior noise and vibration absorption during sleep movements. This ensures that your deep sleep remains undisturbed by your partner's tossing and turning or getting up, enhancing overall sleep comfort. The high-density foam offers balanced support to maintain proper spinal alignment. The combination of gel memory foam and comfort foam effectively relieves pressure points.
All-Night Freshness - This Novilla full foam mattress is engineered with advanced foam technology that effectively absorbs odors and moisture. Creating a dry, hygienic and comfortable sleeping environment. This allows you to experience refreshing sleep and wake up feeling rejuvenated.
Healthy Sleep - Novilla gel memory foam mattress is quilted with a breathable knitted fabric, offering a soft and luxurious feel. All foams in the Novilla mattress are CertiPUR-US certified, and the mattress cover is OEKO-TEX Standard 100 certified, ensuring the absence of harmful substances. This provides a safe and healthy sleep environment for your family. Additionally, it comes with a 10-year protection, ensuring a decade of worry-free.
Full Size Mattress in a Box - Novilla memory foam mattress is vacuum-compressed and packaged in a compact box for easy delivery. Easy to setup and fits all kinds of full bed frames, even on the floor. Mattress is recommended 72 hours for air out and reshape.

No. 7

LIFEMENT Full Size Mattress, 6 Inch Full Mattress, Basic Graphite Cooling Memory Foam Mattress in a Box, Pressure Relief with Medium Firm Support, CertiPUR-US Certified, 75''L x 54''W

GRAPHITE COOLING SLEEP SURFACE : This full size mattress uses graphite-infused memory foam to help move heat away from the body. The breathable design keeps your full mattress cool, dry, and comfortable through the night.
FIBERGLASS-FREE HOME SAFETY : Built without fiberglass, this full size mattress offers a cleaner sleep solution for bedrooms and guest rooms. The soft cover on this full mattress adds comfort with peace of mind.
3-LAYER ADAPTIVE SUPPORT SYSTEM : High-density base foam in this full size mattress provides lasting stability. A transition layer absorbs motion and minimizes disturbance. The top layer of open-cell graphite memory foam enhances airflow and breathability while contouring to your body for pressure relief in any sleep position : back, side, or stomach.
CERTIFIED QUALITY MATERIALS : Every full size mattress is made with CertiPUR-US certified foam and OEKO-TEX certified textiles. This full mattress is tested for durability and safer materials.
MATTRESS IN A BOX CONVENIENCE : Your full size mattress ships compressed for easy delivery and fast setup. Simply unbox the full mattress and allow it to fully expand.

No. 8

Gelsea 6 Inch Full Size Mattress, Firm Gel Memory Foam Full Mattress in a Box, Firm Back Support for Pressure Relief & Spinal Alignment, CertiPUR-US Certified, Fiberglass-Free

Healthy Firm Support: Engineered for those who prefer a solid, stable sleep surface, our firm full mattress provides the structural integrity your spine needs. It keeps your hips and shoulders level, and prevents lower back strain and morning stiffness, making it an ideal choice for growing kids and anyone who enjoys balanced cushioning.
Premium Comfort: Our full memory foam mattress contours to your body's unique curves, providing targeted relief for side, back, and stomach sleepers. By promoting optimal spinal alignment and cushioning sensitive joints, it soothes the pressure points that cause tossing and turning. Whether it is for a master bedroom, guest room, or a growing child's bed, this full size mattress ensures a restorative night without morning aches.
Advanced Temperature Regulation: Engineered with open-cell gel infused foam and a removable and washable moisture-wicking poly-rayon cover, this full mattress creates a continuous airflow system. It pulls heat away from your body, maintaining an optimal sleep temperature—cool and refreshing in the summer, and pleasantly cozy in the winter.
Effortless Setup: Our full memory foam mattress is compressed, rolled, and packed in a compact box for easy delivery and setup. It is compatible with different types of frames, including box springs, slatted platforms, adjustable beds, bunk beds, and even floors. Simply unbox the mattress and allow 24 hours for it to fully expand to its original shape.
Worry-Free Sleep: At Gelsea, we do not just promise quality—we prove it. All Gelsea mattresses are CertiPUR-US and OEKO-TEX Standard 100 certified and backed by a 10-year limited warranty. All components, from the premium memory foam to the breathable fabrics, are rigorously tested for harmful chemicals and volatile organic compounds, providing you with total peace of mind.

Your Guide to a Costco Full Mattress

Buying a new mattress can feel like a big decision. You spend a lot of time on your mattress! Costco offers a great selection of full-size mattresses that can be a good value. This guide will help you understand what to look for.

Key Features to Look For

When you’re shopping for a Costco full mattress, keep these features in mind:

Firmness Level: Mattresses come in different firmness levels. Some people like a soft mattress that hugs their body. Others prefer a firm mattress for more support. Think about how you like to sleep.
Type of Mattress: There are several main types of mattresses. Foam mattresses are popular. They can offer good pressure relief. Innerspring mattresses have coils for support. Hybrid mattresses mix foam and coils.
Cooling Features: Some mattresses have special features to help you stay cool at night. This is important if you tend to sleep hot. Look for breathable covers or special cooling foams.
Edge Support: Good edge support means the sides of the mattress are strong. This makes it easier to sit on the edge of the bed. It also helps you feel more secure when sleeping near the edge.
Motion Isolation: If you share your bed, motion isolation is important. It means that when one person moves, the other person doesn’t feel it as much. Foam mattresses are usually good at this.

Important Materials

The materials inside a mattress affect how it feels and how long it lasts.

Memory Foam: This foam contours to your body. It provides good cushioning and can relieve pressure points.
Polyfoam: This is a common type of foam. It offers support and can be used in different layers.
Latex: Latex foam can be natural or synthetic. It’s known for being responsive and durable. It also sleeps cooler than some memory foams.
Innerspring Coils: These are metal springs that form the support core of a mattress. They offer bounce and airflow.
Hybrid Construction: This combines coils with layers of foam. It aims to give you the best of both worlds: support from coils and comfort from foam.

Factors That Improve or Reduce Quality

Several things can make a mattress better or not as good.

Density of Foam: Higher density foam is usually more durable. It will likely last longer. Lower density foam might sag sooner.
Coil Count and Gauge (for Innerspring/Hybrid): More coils can mean better support. The gauge of the coils (how thick the wire is) also matters. Thicker wire (lower gauge) is usually stronger.
Cover Material: The fabric on top of the mattress is important. Breathable materials like cotton or Tencel can help with cooling.
Certifications: Look for certifications like CertiPUR-US. This means the foam has been tested and is safe. It’s free from certain harmful chemicals.
Warranty: A longer warranty usually means the manufacturer has confidence in their product. It protects you if there are defects.

User Experience and Use Cases

How people use and feel about their mattresses varies.

Side Sleepers: Often prefer medium-soft to medium-firm mattresses. These help cushion the shoulders and hips.
Back Sleepers: Usually benefit from medium-firm to firm mattresses. These keep the spine aligned.
Stomach Sleepers: Generally need a firmer mattress. This prevents the hips from sinking too low.
Couples: Motion isolation and edge support are key. This ensures a peaceful night for both people.
Budget-Conscious Shoppers: Costco mattresses can be a great choice. They often offer good quality at a lower price than specialty mattress stores.

Frequently Asked Questions about Costco Full Mattresses

Q: What is a “full” mattress size?

A: A full mattress is also known as a double mattress. It measures about 54 inches wide and 75 inches long. It’s bigger than a twin but smaller than a queen.

Q: Are Costco mattresses good quality?

A: Costco often carries well-known mattress brands. Many of them offer good quality for the price. You can find mattresses made with durable materials.

Q: Can I try out a Costco mattress before buying?

A: In-store, you can often feel the mattresses. However, you can’t sleep on them. Online purchases usually have a trial period for you to test the mattress at home.

Q: What is the return policy for Costco mattresses?

A: Costco has a generous return policy. You can usually return a mattress if you’re not happy with it, even after opening it. Check Costco’s specific policy for details.

Q: Do Costco mattresses come with a warranty?

A: Yes, most mattresses sold at Costco come with a manufacturer’s warranty. The length of the warranty varies by brand and model.

Q: Are Costco full mattresses suitable for children’s beds?

A: Yes, a full mattress is a good size for a growing child or teenager. It offers more space than a twin bed.

Q: Can I find memory foam mattresses at Costco?

A: Absolutely. Costco carries a variety of memory foam and hybrid mattresses. These are popular choices for comfort and support.

Q: How do I know if a mattress is too firm or too soft for me?

A: This depends on your sleeping position and personal preference. Side sleepers often need softer mattresses. Back and stomach sleepers usually need firmer ones. Many mattresses have trial periods to help you decide.

Q: What are the benefits of buying a mattress from Costco online?

A: Buying online offers convenience. You can browse many options from home. Plus, mattresses are often delivered right to your door.

Q: How long do Costco mattresses typically last?

A: With proper care, a good quality mattress can last between 7 to 10 years. The lifespan depends on the materials and how it’s used.

Larry Fish

Hi, I’m Larry Fish, the mind behind MyGrinderGuide.com.. With a passion for all things kitchen appliances, I created this blog to share my hands-on experience and expert knowledge. Whether it’s helping you choose the right tools for your culinary adventures or offering tips to make your kitchen more efficient, I’m here to guide you. My goal is to make your time in the kitchen not only easier but also enjoyable! Welcome to my world of kitchen mastery!