Serta

Serta Perfect Sleeper X Knox Plush Innerspring 13.75" Full Mattress

Name: Serta Perfect Sleeper X Knox Plush Innerspring 13.75" Full Mattress
Brand: Serta
Price: 949.00 USD
Availability: BackOrder

(0) Reviews KNOXPL4/6MATT

Sale Price $1149.00 Save $200 $949.00 + Free Delivery

Size:

King California King Queen Full Twin XL

Free Gift! Your choice of a $200 GW Rebate or $200 MasterCard

Add to Cart

Serta Perfect Sleeper X Knox Plush Innerspring 13.75" Full Mattress

Sale Price $1149 Save $200 $949

Add to Cart

0% APR with equal monthly payments of $40/mo. for 24 months

or Buy Now, Pay Later. No ongoing commitment.

Affirm

Benefits

Motion Separation
Pressure Relief
Temperature Regulation

Explore Serta® Perfect Sleeper X Knox Plush Innerspring 13.75" Mattress

Shop Now

Mattress Buying Guide

Description

Experience elevated comfort and reliable support with the Serta® Knox Plush mattress—designed to deliver pressure-relieving softness with the trusted stability Serta is known for. Ideal for sleepers who love a plush, inviting feel, the Knox Plush gently cradles your body while maintaining consistent support for restful, uninterrupted sleep. At the core, Serta® Individually Wrapped Coil Technology contours to your body and minimizes motion transfer, helping you sleep undisturbed even when your partner moves. Layers of PillowSoft® Foam and Serta® Comfort Foam work together to provide a cloud-like surface feel, easing pressure at the shoulders and hips while promoting proper spinal alignment. Finished with a breathable, soft-knit cover, the Knox Plush offers a cozy sleep environment designed for comfort night after night.

Individually Wrapped Coil Technology

Each coil responds independently to your body, delivering targeted support and reducing motion transfer for a more peaceful sleep.

PillowSoft® Foam

A soft, cushioning layer that gently cradles your body and enhances pressure relief for a luxuriously plush feel.

Serta® Comfort Foam

This cushioning foam adapts to your shape to provide balanced comfort and long-lasting support.

Plush Comfort Feel

Designed for sleepers who prefer a softer surface, offering enhanced contouring and pressure relief.

Breathable Knit Cover

A soft, breathable mattress surface that promotes airflow and adds a comfortable, inviting touch.

Durable Foam Base

Provides a stable, supportive foundation that helps maintain mattress shape and performance over time.

Specifications

Type
Innerspring

Comfort
Plush

Brand	Serta
Mattress Type	Innerspring
Size	Full
Height	13.75"
Width	54.00"
Depth	75.00"
Weight	88.59 lbs
Warranty	10 Year Limited
Profile Height	13.75"
Works With Adjustable Base?	Yes

Products in Collection

View Collection

Serta® Perfect Sleeper X Knox Plush Innerspring 13.75" Mattress

Customer Reviews (0) Reviews

Need Help Choosing a Mattress?

The mattress experts at Gardner White have your back! Our Mattress Buying Guide can help you cut through all the confusion when you're shopping for a new mattress. Decades of collective experience went into creating the perfect guide for mattress shopping, check it out now!

We've also developed a list of the Best Mattresses of 2025. These include the Best Innerspring Mattress, the Best for Back Pain, and the Best Cooling Mattress among ten other 'Best Of' models. If you're looking for the best of the best in a new mattress, this list is your go-to guide to find youre perfect fit!

Stories + Advice

Loading Post...

Discover More

Order Total	3 Months	6 Months	12 Months
$75	$25/month	n/a	n/a
$150	$50	$25/month	n/a
$300	$100	$50	$25/month
$900	$300	$150	$75
$1200	$400	$200	$100

Shopping Cart

Serta Perfect Sleeper X Knox Plush Innerspring 13.75" Full Mattress

Serta Perfect Sleeper X Knox Plush Innerspring 13.75" Full Mattress

Benefits

Description

Individually Wrapped Coil Technology

PillowSoft® Foam

Serta® Comfort Foam

Plush Comfort Feel

Breathable Knit Cover

Durable Foam Base

Need Help Choosing a Mattress?

Stories + Advice

Loading Post...

Loading Post...

Loading Post...