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

Full Size Mattress,12 Inch Hybrid Full Mattress in a Box with Memory Foam and Pocket Spring for Pressure Relief & Comfort Sleep & Zoned Support, Medium Firm,CertiPUR-US CertiPUR-US Certified

【Full Mattress】Our 12 inch hybrid Full mattress features an individually wrapped coil system combined with multiple foam comfort layers. This integration allows our Full mattress to provide both exceptional motion isolation and precise support for every part of your body, delivering an ultimate comfortable sleep experience.
【Medium Firmness, Sleeping Freedom】 Our medium firm Full mattress safeguards your spine with precise support and relieves your pressure with gentle cushioning, effectively easing body fatigue so you wake up refreshed and recharged the next day.
【Certified Safe, Worry-Free Purchase】Our memory foam mattress Full size features CertiPUR-US certified foam in every layer, rigorously tested to meet the highest standards of quality and safety. If you have any questions about our memory foam Full mattress, please contact our customer support team.
【Precise Support, Comfortable Sleep】The Full size mattress features individually wrapped coils that independently and precisely respond to your body's pressure points, providing optimal support. This hybrid Full mattress includes a skin-friendly, breathable top layer, a pressure-relieving middle layer, and a stable support base layer. Whether you sleep on your side, back, or stomach, it ensures the best possible support for a tranquil and relaxing sleep.
【12 inch Full Mattress in a Box】Our Full mattress is compressed, rolled, and packaged in a box for easy transport and setup. It fits most common bed bases, such as box springs, platform beds, adjustable bases, or even the floor. Please note: Your mattress will fully expand within 72 hours after unboxing. (Please use caution during the rapid expansion process.)

No. 2

EGOHOME Full Size Memory Foam Mattress, 8 Inch Bed Mattress in A Box with Cooling Green Tea Gel, Pressure Relief with Medium Firm Support, CertiPUR-US Certified, 75''L x 54''W, ‎37.3 pounds White

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. 3

Full Size Mattress 10 Inch in a Box, Hybrid Mattresses Full Bed Fiberglass Free, Memory Foam and Individual Pocket Springs

PREMIUM FULL SIZE MATTRESS IN A BOX – Measuring 54" W x 75" L x 10" Th, this fiberglass free full size mattress is crafted with cutting-edge technology and premium materials, delivering exceptional comfort and a safe sleep environment.
EASY SETUP & UNIVERSAL FIT – Designed to work with most bed frames including box springs, platforms, bunk beds, or floor. Simple unboxing and setup: unroll, unwrap, and allow 48–72 hours for full expansion.
MEDIUM-FIRM HYBRID DESIGN FOR DEEP SLEEP – Balances comfort and support with advanced temperature regulation and motion isolation. Reduces disturbances from tossing and turning or a restless partner, helping you wake up truly refreshed.
SUPERIOR COMFORT WITH POCKET COILS & MEMORY FOAM – Individually wrapped pocket coils and premium memory foam work together to provide pressure relief, body contouring support, and enhanced breathability for a cool night's sleep.
CERTIFIED QUALITY & 10-YEAR SUPPORT – CertiPUR-US and Oeko-Tex Standard 100 certified. Rigorously inspected and backed by a 10-year support. Our customer service team is always ready to help.

No. 4

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

Pressure Relief Memory Foam: This 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 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.

No. 5

Novilla Bliss Full Mattress, 12 Inch Gel Memory Foam Full Size Mattress in a Box for Cool Night Sleep & Pressure Relief, Support Foam for Spine Alignment & Motion Isolation, Medium Plush Feel

【Pressure Relief & Spinal Alignment】This full size mattress features a 3-layer foam design that helps relieve pressure and support proper spinal alignment. The NanoGel memory foam gently contours to your body, while the comfort and support layers work together to distribute weight evenly and ease tension on key pressure points like back and hip. This mattress full size is certified by the ACA. Designed to provide balanced support and a more restful sleep night.
【Cooling Comfort for Restful Sleep】The soft knitted cover is crafted from breathable knit fabric, helping to keep the sleep surface comfortably cool. The full mattress features cooling NanoGEL memory foam that dissipates heat and minimizes moisture buildup—ideal for hot sleepers. Crafted with plant-infused fiber of the comfort foam, the full size memory foam mattress absorbs odor, delivering a fresh and blissful sleep experience, so you wake up energized for the day ahead.
【Isolates Partner's Movements & Reinforced Edge Support】 The triple-layer novilla full size mattress construction works together to absorb motion at every level, reducing movement transfer across the mattress. Whether you sleep alone or with a partner, there is minimal disruption. Reinforced edge support helps you feel stable, so you don't have to worry about rolling off the side of the full bed mattress while lying it.
【Certified Safe & Healthy Sleep】The full size mattress 12 inch is crafted with CertiPUR-US certified foam, made without harmful substances. The soft-to-touch cover is OEKO-TEX certified, meaning it meets rigorous skin safety standards for a gentl sleep surface. ISPA certification verifies its compliance with international sleep product standards for quality and durability. Novilla memory foam mattress full delivers you a cloud-like experience.
【Full Size Mattress in a Box】Your 12 inch full size mattress arrives rolled and compressed in a box. It is easy to set up and fits all kinds of bed frames. Typically, the full mattress 12 inch regains its full shape within 72 hours, using it sooner may help speed up the expansion process. We offer you a 100-day free trial and a 10-year protection with the mattress full.

No. 6

Full Mattress, 12 Inch Hybrid Mattress in a Box, Medium Firm Memory Foam Mattress, Fiberglass Free with Individual Pocket Springs, Motion Isolation&Pressure Relief, CertiPUR-US 75"*54"

Highly Breathable Fabric Layer - Mattress surface is made of natural cotton, which is safe and environmentally friendly. It features a breathable hole design to promote air circulation, quickly expel moisture and heat, and maintain a dry and comfortable sleeping environment, making it ideal for those who sweat easily or have sensitive skin.
3D Mesh Fabric Design - The full mattress interior employs 3D pleated filling technology to further enhance breathability. This design also effectively distributes body pressure, closely conforming to areas such as the shoulders, waist, and hips, helping the body maintain a natural relaxed state.
Zone Support System - mattress incorporates ergonomic design with a zone support system, providing differentiated support for different body parts to promote healthy spinal alignment. The use of breathable materials further enhances comfort and health benefits.
Quiet and Distraction-Free - The mattress uses an independent spring system and zoned quiet technology to effectively absorb vibrations and noise caused by turning over. This ensures that partners do not disturb each other when getting up or turning over at night, making it particularly suitable for light sleepers or couples,Ensuring the balanced comfort of this hybrid mattress.
CertiPUR-US Certified - All foams in this firm mattress are CertiPUR-US certified, ensuring durability and safety. This compressed mattress in a box is easy to maneuver and install. Please handle with care when unboxing. For any assistance, please contact our customer support team.

No. 7

QOFYU 12 Inch Full Size Mattress 54”Wx75”L, Black Individual Pocket Spring Innerspring Mattress with Motion Isolation & Pressure Relief, Mattress in a Box

Allow 24-72 hours for the mattress to fully expand after unboxing; proper ventilation helps restore its original shape and comfort more quickly.
Use a suitable bed frame or foundation with proper support to prevent sagging and extend the lifespan of your pocket spring mattress.
Keep the mattress dry and avoid prolonged exposure to moisture, water, or direct sunlight to maintain material quality and performance.
Do not jump, stand, or place heavy sharp objects on the mattress, as this may damage internal pocket springs and foam layers.
For best maintenance, regularly rotate the mattress 180 degrees every 3–6 months; do not fold or bend the mattress forcefully.

No. 8

Full Size Mattress, Medium Firm 12 Inch Hybrid Mattress Full Size in a Box - Memory Foam & Pocket Springs for Back Pain Relief, Fiberglass Free, Motion Isolation, CertiPUR-US & OEKO-TEX Certified

Precision Fit & Hassle-Free Setup:Designed for Full-size beds (54"×75"×12"), it arrives compressed in a box for effortless setup. Fits all frame types—platform, box spring, or floor. Allow 48-72 hours for full expansion. The box design simplifies handling and placement.
Cooling comfort & healthier sleep:Memory foam infused with cooling gel provides pressure relief and temperature regulation. The hybrid design combines individually wrapped coils for customized support from head to toe. Fiberglass-free, OEKO-TEX, and CertiPUR-US certified foams ensure hypoallergenic safety and zero off-gassing for fresh, breathable air.
Customized Support & Lasting Peace of Mind:Experience the precision of nearly 900 individually wrapped springs for targeted spinal support and minimal motion transfer. Zoned design offers softer shoulder support and firmer waist push-back. Tested 100,000 times with reinforced edges and high-density foam base for lasting, all-position support.
Hybrid Value & Eco-smart:The hybrid design delivers premium comfort at a great value. No box spring needed—ready to use straight from the box. Compact shipping reduces our carbon footprint and simplifies storage. Heads-up: During the first a short period after unboxing, the comfort foam layers may not have fully expanded, which could make the mattress feel firmer than expected. Gently patting the surface can help speed up the recovery process.
No-Risk Guarantee: At Luxysea, we're more than a brand - we're a symbol of enduring trust.Each bed in a box full size is manufactured under strict QC guidelines and inspected before being shipped to you. We offer 360-night trial & 10-year support. If you have questions or feedback about full size memory foam mattress, our dedicated team is always eager to assist.

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!