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Sealy® Response™ Essential™ Prospect G3 Firm Innerspring Twin Matress-521633T

Model #: 521633T
Mattress Land Sku
Support Gradient
At a Glance

Our traditional, innerspring option responds to your every movement and offers you an exceptional level of support, including our exclusive Posturepedic Technology™.

$499.00Save $200.00
Don't Forget These Add Ons

Sealy® Ease™ 3.0 Twin Adjustable Foundation


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Set up and Installation


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0% Financing Available

Get to know this product.

At the heart of every Sealy® mattress is the support that's right for you. Only Sealy offers Posturepedic Technology™ to provide more support where you need it most. Sealy’s exclusive Posturepedic Technology™ targets the heaviest part of your body, with reinforced support where you need it most. Only Posturepedic Technology’s zoned support gives you deep, targeted support for exceptional all-over comfort.

Designed and built in the U.S.A., every Sealy mattress combines smart innovation, precise engineering and industry-leading testing to ensure quality and durability. You can trust Sealy to deliver durable support and comfort.

The Sealy Response™ Collection features innerspring mattresses that offer exceptional full-body support with ease of movement, for that sleep-on-top feeling and the comfort you want. Sealy Response uses exclusive Posturepedic Technology™ to deliver the stable, all-over support you want, with reinforced support under the heaviest part of your body, where you need it most.

With our exclusive bedFITSM diagnostic system, only Mattress Land SleepFit® can take out the guesswork and find the right Sealy bed for you!

  • Sealy Response™ Coil
  • 0.5" SealyCushion™ Air Foam
  • 1" SealySupport™ Firm Foam

*Mattress image may not depict actual size


Misc. Specs

Mattress SizeTwin
Mattress Comfort LevelFirm
CollectionResponse™ Essential™ Prospect Firm G3
Mattress ConstructionInnerspring
WarningProposition 65 Warning for California Residents