Is this mattress good for side sleepers?

Sealy rates it for side, back and stomach sleepers. The gel foam gives some pressure relief, but the cushion-firm surface is firmer than a plush mattress, so light side sleepers may find it too hard at first.

How firm is it really?

It is medium-firm, described as cushion firm. Expect a supportive surface with modest give rather than a soft pillow top, and allow a break-in period before judging it.

Does it work with an adjustable base?

Yes. Sealy lists it as compatible with adjustable bases, and the coil-and-foam build flexes with the frame.

What comes in the box?

The mattress arrives compressed in a box. No motor, base or adjustable hardware is included, despite what some product images suggest.

Will it sag over time?

Some owners report middle sagging within weeks, while others sleep on it without problems. Rotating it regularly and using a proper foundation helps, and warranty coverage depends on the retailer.

Does it need time to expand?

Yes. It ships compressed and expands to its stated king dimensions after unrolling, which can take a day or more.

What do buyers say about the Sealy Sleepy's by Sealy Cushion Firm Mattress King?

Buyers like: Ideal balance of firmness and comfort; Significant sleep quality improvements and waking pain-free; Excellent support for side and back sleepers. Common complaints: Sinks into the middle within weeks; doesn't hold up; Mattress felt like a sink hole within two days.

Sealy Sleepy's Cushion Firm Mattress Price History: Lowest $1,999.99

Q: Where is the Sealy Sleepy's by Sealy Cushion Firm Mattress King cheapest?

At Mattress Firm, for $1,999.99, as of our latest check.

What reviewers say

Owners who like it call the firmness balance just right and report better sleep and less back pain. A vocal minority say it sags in the middle quickly and feels like a brick out of the box.

What people mention

FirmnessMixedSome call it the right amount of soft and firm; others find it brick-hard until it breaks in.
SaggingCriticisedMultiple owners report the middle sinking within weeks and the mattress not holding up.
SupportPraisedBack and side sleepers say it supports them well and eases back pain.
Motion transferPraisedThe wrapped coils are credited with reducing movement between partners.
OdorMixedA factory smell is noticeable on opening but fades quickly.
Break-inCriticisedIt takes time to soften, so the first nights feel firmer than expected.

From Mattress Firm

Individually wrapped coils reduce motion transfer
Gel foam layers contour and relieve pressure
Cushion-firm feel with balanced comfort and support
Ships as a mattress in a box for easy setup
Designed for back, side and stomach sleepers
Compatible with adjustable bases

Sizes: Twin, Twin XL, Full, Queen, King
Materials: Super Soft Stretch Knit Rayon Cover (rayon fiber); comfort layer of 7/8" gel poly foam in quilt and 1.25" firm foam; support system of 8" Caliber Edge pocketed
Fit: King: 76" W x 80" L, 10.5" height; medium-firm comfort
Sizing: May feel firmer than the showroom model at first; allow 30-60 days for the mattress and body to adjust. Allow up to 72 hours after unrolling for full expansion.
Care: Rotate end-to-end at 2 weeks, then every 2-3 months; use a waterproof mattress protector; carton and transport on its side when moving; do not remove the law ta
Guarantee: 10 Year Limited warranty; Low Price Guarantee matches a lower price up to 120 nights; 120 Night Sleep Trial with money back if you don't love it
Returns: 120 Night Sleep Trial: if you don't love it, they'll help you find a new one or your money back
Shipping: Free shipping; delivery to your front door, side door or garage; contactless delivery; no removal of your old mattress set
Packs: Add a second Twin XL mattress in cart to build a Split King set
In the box: Mattress compressed in a box

About the Sealy Sleepy's by Sealy Cushion Firm Mattress King

It is designed for back, side and stomach sleepers. It is compatible with adjustable bases.

The cover is a stretch knit made of rayon fiber. The comfort layer has 7/8" of gel poly foam in a quilt plus 1.25" of firm foam. Gel foam layers contour to the body and relieve pressure. The support system is 8" of Caliber Edge pocketed coils. The coils are individually wrapped to reduce motion transfer.

The mattress ships compressed in a box. Allow up to 72 hours after unrolling for full expansion. It may feel firmer than a showroom model at first, so allow 30 to 60 days for the mattress and your body to adjust.

Bed size: King
Dimensions: 76" W x 80" L, 10.5" height
Comfort level: Medium-firm (cushion firm)
Sleeper type: Back, side and stomach
Cover: Stretch knit rayon fiber
Comfort layer: 7/8" gel poly foam in quilt; 1.25" firm foam
Support system: 8" Caliber Edge pocketed coils
Compatibility: Adjustable bases
Care: Rotate end-to-end at 2 weeks, then every 2-3 months. Use a waterproof mattress protector. Carton and transport on its side when moving. Do not remove the law tag.
In the box: Mattress compressed in a box