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Serta Perfect Sleeper X Knox Hybrid Mattress
Serta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid MattressSerta Perfect Sleeper X Knox Hybrid Mattress
Bed SizeTwin-XL
Material+5.5" Boxspring
+5.5" Boxspring
+9" Boxspring
Mattress Only
Mattress Comfort LevelFirm
Smart summary
Generated by AI

Keeps Your Spine Aligned
Five-zone coils and contouring memory foam provide full-body support in any position.
Keeps You Sleeping Cool
Graphite-infused memory foam and cooling technology pull heat away from your body.
Choose Plush Or Firm
Choose plush for side sleeping comfort, or firm for stomach and back support.
Fits Your Existing Frame
Works with most standard frames, platforms, box springs, and adjustable foundations.
Specifications
Mattress
- Twin XL: 39" x 80"
- Full: 54" x 75"
- Queen: 60" x 80"
- King: 76" x 80"
- Cal King: 72" x 84"
Standard Foundation/Base
- Twin XL: 39" x 80", 750 lbs weight limit, 28 lbs
- Full: 54" x 75", 750 lbs weight limit, 38 lbs
- Queen: 60" x 80", 750 lbs weight limit, 45 lbs
- King: 76" x 80", 750 lbs weight limit, 56 lbs
- Cal King: 72" x 84", 750 lbs weight limit, 58 lbs
Low Profile Foundation/Base
- Twin XL: 39" x 80", 750 lbs weight limit, 27 lbs
- Full: 54" x 75", 750 lbs weight limit, 36 lbs
- Queen: 60" x 80", 750 lbs weight limit, 45 lbs
- King: 76" x 80", 750 lbs weight limit, 56 lbs
- Cal King: 72" x 84", 750 lbs weight limit, 58 lbs
Current price is USD$1,349.00
Prices may vary in club and online
Freight shipping
Free shippingColumbus, 43215
Arrives by Wed, Nov 25
Return or replace anytime.

Limited time! Get a $60 statement credit when you open an account between 10/28-12/2 and use it to make $30 in eligible Sam’s Club purchases within 30 days¹
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current price $1,699.00
Serta Perfect Sleeper X Knox Hybrid Mattress
4.6704 out of 5 Stars. 267 reviews
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About this item
Member ratings & reviews
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Showing 1-3 of 267 reviews
Jun 7, 2026
Reviewer name: Telisa S
5 out of 5 stars review
So far so good!
Review from Serta
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Mar 9, 2026
Reviewer name: Carin Z
5 out of 5 stars review
Best Night Sleep Period.
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Mar 8, 2026
Reviewer name: dimpelss
5 out of 5 stars review
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Current price is USD$1,349.00
Prices may vary in club and online
Freight shipping
Free shippingColumbus, 43215
Arrives by Wed, Nov 25
Return or replace anytime.





























