Is the Serta iComfort Aspire medium or firm?

It is a medium feel. Serta lists it as medium comfort with a tight top over memory foam.

Does it come with a box spring?

Yes. This listing is the mattress with a box spring included, in Twin XL.

Is it good for side sleepers?

A medium memory foam feel generally suits side and back sleepers, but heavier side sleepers may want more cushioning.

How much does it cost?

$1,549 at JCPenney as of November 8, 2026, the only new price found.

Is it CertiPUR-US certified?

Yes. The foam is CertiPUR-US certified for low emissions.

Where is the Serta iComfort Aspire 14" Medium Memory Foam Tight Top Mattress with Box Spring cheapest?

At JCPenney, for $1,549.00, 56% off, as of our latest check.

What do buyers say about the Serta iComfort Aspire 14" Medium Memory Foam Tight Top Mattress with Box Spring?

Rated 4.6 out of 5 from 88 ratings. Buyers like: Comfortable and supportive; Sleeps cool; Firm edges that don't collapse when sitting on them. Common complaints: Surface is very slippery, making it tricky to put sheets on; A little stiff at first.

Serta iComfort Aspire 14" Medium Mattress Price History: 56% Off

What reviewers say

4.6 / 588 ratings

Rated 4.6 out of 5 from 88 ratings. Buyers generally report a comfortable medium feel and easy setup, though some find memory foam warm and slow to recover.

What people mention

ComfortPraisedOwners describe the medium feel as comfortable and supportive.
SetupPraisedBuyers report the mattress is easy to set up.
HeatCriticisedSome sleepers say memory foam sleeps warm.
Foam expansionMixedA few note the foam takes time to fully expand after unboxing.
Size optionsCriticisedShoppers want more than Twin XL.

From JCPenney

Medium comfort, suited to side, back, stomach or combination sleepers
CoolFeel™ Fabric keeps you comfortable throughout the night
PerfectConform™ Memory Foam contours and cradles pressure points
5 ZoneResponse™ Design provides head-to-toe comfort and support
CertiPUR-US® Certified
Designed and built in USA

Sizes: twin xl, full, queen, king, california king
Materials: Base Material: 100% Foam
Fit: Medium comfort type; mattress may initially feel firmer than expected, allow up to 60 days to acclimate
Sizing: Your new mattress may initially feel firmer than expected; allow up to 60 days to acclimate.
Care: Spot clean
Guarantee: 10 Year Limited Warranty
Returns: Furniture & Mattress Return Policy applies; contact Furniture & Mattress Customer Service at 1-800-322-1189 for help with a return
Shipping: Ships directly from the manufacturer; includes White Glove Delivery (unpacked and assembled in any room, packing material removed); truck delivery for heavy or
In the box: 1 Mattress, 1 Box Spring