Serta Perfect Day 12 inch Firm Mattress in a Box on a blue bed frame in a modern bedroom.
Serta Perfect Day 12 inch Firm Mattress in a Box on a blue bed frame in a modern bedroom.
Perspective view of the Serta Perfect Day 12 inch firm mattress with a quilted breathable top.
Perspective view of the Serta Perfect Day 12 inch firm mattress with a quilted breathable top.
Top view of the textured, diamond-quilted white surface on a Serta Perfect Day firm mattress.
Top view of the textured, diamond-quilted white surface on a Serta Perfect Day firm mattress.
Close-up of the Serta Perfect Day mattress border and logo, highlighting the durable firm construction.
Close-up of the Serta Perfect Day mattress border and logo, highlighting the durable firm construction.
Serta Perfect Day internal view showing individually wrapped pocketed coils for firm, targeted support.
Serta Perfect Day internal view showing individually wrapped pocketed coils for firm, targeted support.
Serta Perfect Day 12 inch firm mattress styled in a clean, contemporary bedroom for better sleep.
Serta Perfect Day 12 inch firm mattress styled in a clean, contemporary bedroom for better sleep.
Person sleeping on their side to show proper alignment on the Serta Perfect Day 12 inch firm mattress.
Person sleeping on their side to show proper alignment on the Serta Perfect Day 12 inch firm mattress.
Macro shot of the breathable, soft-to-the-touch fabric on a Serta Perfect Day firm mattress.
Macro shot of the breathable, soft-to-the-touch fabric on a Serta Perfect Day firm mattress.
Serta Perfect Day layer diagram showing pillow top comfort, 3-zone support, and cooling gel technology.
Serta Perfect Day layer diagram showing pillow top comfort, 3-zone support, and cooling gel technology.
Serta Perfect Day 12" Firm Mattress in a Box

Brand Serta

$499.00
$749.00
Save $250.00
Snap Logo Lease for as low as $/week Learn More

Best For

Back & Side Sleepers

Firmness

Firm Comfort
Only 15 left in stock
OUT OF STOCK
Restock soon! PREORDER NOW
HURRY! LET BUY NOW

Only 15 left in stock

Free Delivery to your  House in 1-2 Weeks.

Free USA Wide Delivery

We offer free delivery on orders over $100. Ships within 1–2 weeks 

Mattress Size

✅ Twin: Provides a comfortable sleep space for one child or adult.

✅ Dimensions: 38" wide x 74.5" long.

 

✅ Full: Children, Single Adults, Adults with Children and/or Pets.

✅ Dimensions: 53" wide x 74.5" long.

 

✅ Queen: The most popular size, providing ample space for two adults to sleep comfortably.

✅ Dimensions: 60" wide x 79.5" long.

 

✅ King: Experience generous space without crowding your partner.

✅ Dimensions: 76" wide x 79.5" long.

 

✅ California King: Perfect for taller individuals, ensuring a comfortable sleep.

✅ Dimensions: 72" wide x 83.5" long.

memorial day sale – save 15% on selected items

00
Days
00
Hours
00
Minutes
00
Seconds

use this code during checkout 

" MEMORIAL15"

On Selected Products
key mattress benefits
Firm Support with Added Comfort Layers

Designed for back and stomach sleepers, offering a stable feel with added cushioning from QuiltLoft™ Memory Foam.
3-Zone Targeted Support System

Gel foam band and zoned coil design provide enhanced support for the lower back and hips to promote proper spinal alignment.
Individually Wrapped Coil Support

Pocketed coils deliver durable, responsive support while reducing motion transfer for undisturbed sleep.
Antimicrobial & Breathable Design

Built-in antimicrobial layer helps keep your mattress fresh, while breathable foams and fabric enhance airflow.

more firm comfort mattresses

what our customers say?

Sign-up to our newsletter and save 10% on your first purchase
Thanks for contacting us. We'll get back to you as soon as possible.
popular brands

Ashley

Dream Cloud

Nectar

MLILY

Ghostbed

Diamond

Corsicana

Sleeptone

American Star

Malouf

Bedgear

Blu Sleep

Bundle Of Dream

Memorial Day Sale!

Closeout
Information

Search

Contact Us

Blogs

FAQ's

Shipping and Delivery

Return Policy

120 Days Sleep Trial
Company

About Us

Financing

Privacy Policy

Terms of service

Warranty

Address - 6075 Old Canton Rd, Jackson Ms 39211

Phone Number - 800-540-9851

Give us a Call

(Mon-Fri 10am - 5pm CT)

Copyright © 2025 Cloudy Mattress. All Rights Reserved.
Serta Perfect Day 12 inch Firm Mattress in a Box on a blue bed frame in a modern bedroom.
Perspective view of the Serta Perfect Day 12 inch firm mattress with a quilted breathable top.
Top view of the textured, diamond-quilted white surface on a Serta Perfect Day firm mattress.
Close-up of the Serta Perfect Day mattress border and logo, highlighting the durable firm construction.
Serta Perfect Day internal view showing individually wrapped pocketed coils for firm, targeted support.
Serta Perfect Day 12 inch firm mattress styled in a clean, contemporary bedroom for better sleep.
Person sleeping on their side to show proper alignment on the Serta Perfect Day 12 inch firm mattress.
Macro shot of the breathable, soft-to-the-touch fabric on a Serta Perfect Day firm mattress.
Serta Perfect Day layer diagram showing pillow top comfort, 3-zone support, and cooling gel technology.

Serta Perfect Day 12" Firm Mattress in a Box

$499.00