Best Mattress Costco In September 2026

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Looking for some of the Best Mattress Costco? As you may know, there are dozens of similar products out there and some come with vastly different price tags. Let us help you out here – we have handpicked for you the Best Mattress Costco.

To help you in your search, we have completed this list of the Best Mattress Costco.

Top Rated Best Mattress Costco Of 2026

Rank	Product Name	Score
1	LA Baby Waterproof Portable/Mini Crib Mattress, 2" - Made in USA with Easy Buy Now	9.7 Buy Now
2	Milliard Classic Pack N' Play Mattress Buy Now	9.5 Buy Now
3	Olee Sleep Tri-Folding Memory Foam Topper, 4'' H, Blue Buy Now	9.1 Buy Now
4	Dream On Me 3" Playard Mattress, White Buy Now	8.8 Buy Now
5	LINENSPA 6 Inch Innerspring Mattress - Full Buy Now	8.6 Buy Now
6	Dream On Me, 3" Foam Playard Mattress, White Buy Now	8.3 Buy Now
7	Milliard Full Tri Folding Mattress with Washable Cover Buy Now	8.1 Buy Now
8	Signature Sleep Contour Encased Mattress, Full, White Buy Now	7.8 Buy Now
9	Lucid 3-inch Ventilated Gel Memory Foam Mattress Topper - Queen Buy Now	7.5 Buy Now
10	Milliard Tri Folding Memory Foam Mattress with Washable Cover Twin XL Buy Now	7.2 Buy Now

1. LA Baby Waterproof Portable/Mini Crib Mattress, 2" - Made in USA with Easy

• La baby 2-inch thick mini/portable crib mattress in white is tear resistant and fits any standard size protable crib
• The 2 inch thick mini/portable crib mattress has an overall size of 24" x 38' x 2".
• The cover has a dust mite barrier, is hypo-allergenic, anti-microbial and non-toxic.
• Proudly made in the u.s.a from domestic and imported sources. 1 year warranty.
• This outer cover material is also stain resistant, waterproof and easy to keep clean with mild soap and water that helps make sure your baby's sleeping environment stays healthy and sanitary.

2. Milliard Classic Pack N' Play Mattress

• Perfect fit this mattress measures 38 long by 26 wide and 2.5 thick to fit perfectly in a standard playard. we recommend measuring your pack and play to ensure this mattress will fit inside.
• More details. soft mattress is not intended for babies. consult with physician for safety recommendations. please allow 24 to 48 hours for foam to expand after opening.
• Complementary cover never worry about spills and accidents during the night this mattress comes with a soft and cozy cover thats waterproof and easily removable to wash when needed.
• Lab tested our topper's foam meets certipur-us standards for content, emissions and durability, and are analyzed by independent, accredited testing laboratories.
• Sleep in comfort help your child sleep better by replacing the thin, hard mattress that comes with the pack-n-play. constructed from top quality, high density foam, this mattress provides the perfect balance between firm support and soft comfort so your little one can sleep better - and you can too!

3. Olee Sleep Tri-Folding Memory Foam Topper, 4'' H, Blue

• Smart package: our advanced compressed package technology delivers the mattress in a box directly to your front door
• Thickness: 4 inches (1. 5 inch dura i-gel foam + 2. 5 dura had support foam)
• Ideal solution to temporary sleeping accommodations. perfect for unexpected sleep over guests, dorm rooms, camping and traveling.
• Complete with supportive memory foam mattress providing soothing sleep
• Portable and comfortable mattress, no pain in the back or neck when people sleep on it.

4. Dream On Me 3" Playard Mattress, White

• This product is intended to be use from 6 months and up. dimensions: 37.5" l x 25.5" w x 3" h
• Accommodates babies 3 45 pounds. fits the graco square pack n' play
• 30 day warranty
• Fisher price ultra lite day & night play yard #cjk24-998 when using this mattress, please make sure it fits tightly in play yard without any gaps between mattress and side walls of the play yard
• Passes all flammability tests (16 cfr 1632 /1633) without the use of flame retardants and also pass phthalate, lead and toxicity tests, also pass phthalate, lead and toxicity tests
• Antibacterial, waterproof lock stitched binding helps prevent mold, mildew and odor from seeping inside like cotton binding allows.

5. LINENSPA 6 Inch Innerspring Mattress - Full

• Fire resistant barrier meets flammability standards and helps keep your loved ones safe while they sleep
• Backed by a 10 year warranty against manufacturer defects
• Mattress comes compressed and rolled for shipping and setup so easy your kids can help
• Quilted fabric cover and foam layer offers a layer of top cushioning for increased comfort
• Heavy gauge tempered steel coils provide a firm mattress with exceptional support and durability perfect for a kids room, guest beds, or an affordable low profile option

6. Dream On Me, 3" Foam Playard Mattress, White

• Made in the usa all our mattresses are designed, engineered and proudly made in the usa using the best quality materials. ships in certified frustration-free packaging. mattress dimensions - 37.5" x 25.5" x 3"
• Fits most popular playards - the dream on me 3" foam playard mattress is the perfect choice for and provides a snug fit with most popular playard brands including the graco square pack n' play.
• Safety first. always - this mattress is greenguard gold certified to ensure the highest level of health, safety and peace of mind. all our mattresses are cpsc tested and pass all flammability tests (16 cfr 1632 /1633) phthalate, lead and toxicity tests.
• Perfect balance of comfort and support - this crib mattress features a superior quality foam core, which provides your infant or toddler with a firm and optimal surface for a peaceful and restful sleep. vinyl 10%/ foam 90%
• A healthy environment for your baby - reinforced, waterproof and antibacterial cover and binding help resist liquids and stains and prevent mold mildew and odor from seeping in. easy to maintain, simply wipe clean with mild soap and water.

7. Milliard Full Tri Folding Mattress with Washable Cover

• Comfortable - this folding mattress is plush, soft, breathable, and super comfortable.
• Size - open mattress measures 73x52x4. folded mattress measures 52x24.5x12.
• Convenient - the removable bamboo cover is machine washable for easy care.
• Durable - built to last and made of 4 thick luxe certified foam that wont lose its shape.
• Portable - this mattress folds easily for travel or storage and is perfect for small apartments and tight spaces.

8. Signature Sleep Contour Encased Mattress, Full, White

• The reversible feature provides extra versatility enabling you to flip and rotate the mattress to even out the wear and last for years to come
• A layer of high density foam at the top and bottom of the mattress gives you a comfortable embracing feel to minimize the feeling of the coils
• Foam in this mattress is made without pbdes, tdcpp or tcep (tris) flame retardants, ozone depleters, mercury, lead and heavy metals. foam is low in voc emissions for indoor air quality (less than 0.5 ppm). made without phthalates regulated by the consumer safety product commission. non-removable and non-washable cover.
• Product dimensions: 75"l x 54"w x 8"h. net weight: 68.5 lbs. shipping dimensions: 56"l x 13"w x 13"h. gross weight: 76 lbs.
• 7" 15 gauge independently encased coils provide an equal weight distribution by contouring the curves of your body, relieving pressure points

9. Lucid 3-inch Ventilated Gel Memory Foam Mattress Topper - Queen

• Special memory foam formula is extremely soft, airy and responsive
• New foam scent is normal and will dissipate over the first 48 hours after opening, this product features a 3-year warranty
• 3 inches of ventilated gel memory foam adds softness and pressure-relieving comfort to your mattress at the shoulders, hips and knees
• Memory foam is infused with a plush gel material that captures heat to control temperature
• Ventilated design improves airflow for a more comfortable sleep climate

10. Milliard Tri Folding Memory Foam Mattress with Washable Cover Twin XL

• Mattress includes removable jacquard ultra-soft bamboo cover with anti-slip bottom. mattress in flat position measures 78in.x38in.x6in. when folded it measures 38in.x26in.x18in.
• The milliard memory foam tri-fold mattress is the ideal solution to temporary sleeping accommodations. perfect for unexpected sleep over guests, family reunion, dorm rooms, camping and traveling.
• The milliard 6in. tri-fold mattress is constructed of 1.5in. of 3lb luxurious memory foam over a 4.5 inch supportive foam base for a great sleep experience. our certipur certified premium memory foam supersedes all with superior high density construction that will not lose its shape.
• Memory foam is known for the therapeutic qualities and comfortable support. the milliard tri-fold mattress is ventilated for air flow to help regulate sleep temperature for maximum support and comfort. available in twin, full and queen size.
• The milliard memory foam tri-fold mattress allows you to get a comfortable night's sleep wherever you go. simply unfold the foam bed on the floor in any room, mobile home, or tent for a comfortable night's sleep. this bed easily accommodates all your sleeping needs then folds neatly away for storage in seconds.