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

ERORVX 12 Inch Full Size Mattress, Hybrid Bed Mattress in a Box, 75" x 54"

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. 2

Full Size Mattress 10 Inch in a Box, Hybrid Mattresses Full Medium Firm Bed

Premium Full-Size Mattress-in-a-Box – 54" x 75" x 10", fiberglass-free, engineered with advanced materials for superior comfort and safer sleep.
Easy Setup & Universal Fit – Compatible with most bed frames (box springs, platforms, bunk beds, or floor). Simply unbox, unroll, unwrap, and allow 48–72 hours for full expansion.
Medium-Firm Hybrid for Deep Sleep – Balances comfort and support with cooling technology and motion isolation. Minimizes sleep disruptions from tossing, turning, or partner movement, reduces nighttime disturbances for truly refreshed mornings.
Hybrid support system – pocket coils and memory foam combine for pressure relief, body-hugging comfort, and cool, breathable sleep.
Certified safe + 10-year support– CertiPUR-US and Oeko-Tex certified, thoroughly inspected, and supported by responsive customer care.

No. 3

EGOHOME Full Size Memory Foam Mattress, 10 Inch Bed Mattress in a Box with Cooling Green Tea Gel, Relieve Pressure with Medium Firm Support, CertiPUR-US Certified, 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. 4

Zinus 12 Inch Full Green Tea Memory Foam Mattress, Medium Firm Feel

ZINUS GREEN TEA MEMORY FOAM – Patented zoned pressure relief, medium firm feel, breathable knitted cover, and a durable base foam — every layer engineered to contour, support, and move with your body for a better night's sleep.
THE BENEFITS OF MEMORY FOAM – Contours to your body for personalized comfort, absorbs movement so you sleep undisturbed, and works as a system with a breathable knitted cover and durable base foam for lasting support.
PRESSURE RELIEF FOR EVERY SLEEP POSITION – Zinus' patented zoned pressure relief technology means different areas respond differently to weight and pressure, so every sleep position gets the right balance of cushioning and support.
NATURALLY FRESH NIGHT AFTER NIGHT – Infused with green tea extract and purified charcoal to neutralize odors and keep your sleep environment fresh. Any mild off-gassing smell on unboxing typically dissipates within 24–48 hours.
CERTIFIED SAFE MATERIALS – Foams are CertiPUR-US certified, free from ozone depleters, formaldehyde, and heavy metals. The cover meets OEKO-TEX Standard 100, tested for over 100 harmful substances including pesticides and allergens.

No. 5

EGOHOME Full Size Memory Foam Mattress 8 Inch, Green Tea, Medium Firm

Pressure Relief Memory Foam: This full mattress uses patented premium memory foam material that provides balanced support while effectively absorbing and evenly distributing body pressure. It greatly alleviating the reaction force on body and relaxing muscles. The stress on joints in contact with the mattress is minimized, which will not add burden to the body while asleep.
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 full mattress is extremely stable, resulting in minimal variation in firmness across different temperatures and humidities. The mattress consistently maintains an optimal balance of softness and firmness, allowing you to enjoy the comfort of memory foam throughout the year.
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.

No. 6

Full Mattress 12 Inch, Luxury Hotel-Level Hybrid Mattress in a Box, Cooling Gel Memory Foam & Upgraded Pocket Springs, Enhanced Back & Lumbar Hip Support, Back Pain Relief,Medium Firm,365-Night Trial

Precision Support for Restful Sleep: This full size mattress combines the precise support of individually wrapped pocket springs with the plush comfort of premium memory foam. It delivers targeted support for your head, neck, shoulders, waist, hips, legs, and feet – helping maintain natural spinal alignment, effectively relieving pressure points, and reducing physical fatigue and soreness. You'll fall asleep easily and enjoy a stable, comfortable night's rest.
Stay Cool & Breathable Comfort: This full mattress features premium knitted fabric that is soft, skin-friendly, and breathable – effectively preventing nighttime stuffiness for a cool and comfortable sleep experience. The memory foam and individually wrapped pocket springs work together to enhance airflow, quickly wick away moisture, and prevent heat buildup, creating a pleasantly cool sleep environment. This mattress is especially ideal for those who tend to sweat at night or have sensitive skin.
Motion Isolation & Strong Edge Support: Our full bed mattress features individually wrapped pocket springs and zoned silent technology that effectively absorb motion and noise from turning over. Even if your partner gets up or tosses and turns during the night, you can still enjoy deep, uninterrupted sleep. The reinforced edge support technology prevents edge sagging and collapse, reduces the risk of roll-off, maximizes usable sleep surface from edge to edge, and delivers long-lasting, stable support.
CertiPUR‑US & OEKO‑TEX Certified: The full mattress features a fiberglass‑free design and is certified by both CertiPUR‑US and OEKO‑TEX, ensuring your sleep environment is free from any harmful substances and fully protecting the health and safety of you and your family. We also offer a 365‑night comfort trial and a 10‑year limited warranty. This hybrid mattress delivers a safe, non‑toxic, odor‑free, and exceptionally comfortable sleep experience.
Mattress in a Box & Easy Setup: This hybrid mattress is compressed and rolled into a box for convenient handling and installation. Simply unbox, unroll, and let it naturally expand. It fits most bed frame types, including flat beds, box springs, platform beds, bunk beds, floor beds, and hospital beds. Allow 48–72 hours for the mattress to fully expand to its original size for optimal support and comfort. The boxed design makes it easy to carry through hallways and doorways.

No. 7

BedStory 13 Inch Firm Full Mattress, Hotel Collection Hybrid Mattresses –Targeted Lumbar & Shoulder Support for Back Pain Relief, Fiberglass-Free, CertiPUR-US Certified, 365-Night Trial

FIRM SUPPORT FOR RESTFUL SLEEP: Designed for sleepers who prefer a stable yet comfortable sleep surface, this firm full mattress delivers the ideal balance of support and gentle contouring. The responsive hybrid construction helps keep your body properly aligned throughout the night, making it ideal for back sleepers, stomach sleepers, and anyone seeking dependable firm comfort.
COOLING & BREATHABLE HYBRID DESIGN:Featuring a breathable quilted cover, airflow-enhanced comfort layers, and individually wrapped pocket coils, this cooling full mattress helps improve airflow, reduce trapped heat, and maintain a fresher, drier sleep environment for year-round comfort.
REINFORCED EDGE SUPPORT FOR FULL-SURFACE STABILITY:Built with enhanced edge reinforcement, this full size hybrid mattress provides dependable support from center to edge, helping reduce edge collapse and roll-off while maximizing your usable sleep space. A great choice for couples and sleepers who need consistent support across the entire mattress.
TARGETED ZONED LUMBAR SUPPORT FOR BACK COMFORT:This 13 inch full mattress is engineered with ergonomic zoned support to provide targeted reinforcement where your body needs it most—including the lumbar area, shoulders, and hips. The responsive support system helps promote better spinal alignment and reduce pressure buildup.
CERTIFIED SAFE, FIBERGLASS FREE & READY TO ENJOY: Your BedStory full mattress in a box is made with CertiPUR-US certified foams, OEKO-TEX certified fabric, and fiberglass-free materials for safer sleep. Designed to meet federal flammability requirements (16 CFR Part 1633), Conveniently compressed for easy setup and backed by a 10-year warranty for long-lasting confidence.

No. 8

NAPSIE 14 Inch Full Mattress, Cooling Gel Memory Foam Mattress in a Box

3-Stage Heat Dissipation: Our TriCool Tech combines a breathable TENCEL cover, cooling gel memory foam and egg crate foam for better heat disperse, temperature regulation, and airflow increase. Our mattress features all the quality and durability to relieve pressure points for enhanced conforming comfort. This medium plush full bed mattress is expertly engineered for sleepers who want a cooler and medium firmness feel.
Cool, Restful Sleep: Built-in with temperature-regulating cooling gel, this full size mattress actively draws heat away from your body throughout the night. TENCEL fibers move moisture better than common fabrics and absorb heat for refreshing comfort that helps you relax, while the egg crate structure creates dedicated 3D airflow channels that actively circulate air—working together to prevent heat buildup and sweat accumulation for scientifically cooler sleep.
Effortless Pressure Relief: The Cooling Aerofushion Foam adapts perfectly to your body to help relieve pressure points and improve your overall comfort level. The egg crate surface of Natural Comfort Foam cradles high-pressure areas like shoulders and hips more effectively, paired with the spinal alignment maintained by the BraceSleeper Support Foam, reducing pressure points for sore backs.
Brand You Can Rely on: All components of this full mattress, from CertiPUR-US Certified memory foam, proudly made in USA, to Oeko-Tex Standard 100 Certified Fabric, are rigorously tested to provid a Child-Safe & Chemical-Free sleeping environment. We believe everyone deserves a better night's sleep—whatever their body type, sleep position, or budget.
Worry-Free 10-year Limited Warranty: Our mattresses are engineered to exceed industry standards and stand the test of time. A 10-year limited warranty is included, offering peace of mind and efficient assistance when required. Please note that our mattresses cannot be returned once opened.

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!