Name: Serta® Perfect Sleeper® Cobalt Calm 15" Wrapped Coil Plush Pillow Top Twin XL Mattress
Brand: Serta Perfect Sleeper
SKU: 1284634
Availability: OutOfStock
Rating: 4.6 (1283 reviews)

Kitchen Appliance Packages

Laundry Pairs

Washers

Dryers

Laundry Centers

Washer Dryer Combos

Drying Cabinets

Commercial Laundry

Laundry Accessories & Cleaners

Laundry

French Door Refrigerators

Side-by-Side Refrigerators

Top Freezer Refrigerators

Bottom Freezer Refrigerators

Built-In Refrigerators

Counter Depth Refrigerators

Freezerless Refrigerators

Column Refrigerators

Compact Refrigerators

Under The Counter Refrigerators

Freezers

Beverage Centers

Kegerators

Wine Coolers

Commercial Refrigeration

Refrigerator Drawers

Ice Makers

Refrigeration Accessories & Cleaners

Refrigeration

Ranges

Cooktops

Microwaves

Wall Ovens

Warming Drawer

Range Hoods

Rangetops

Cooking Accessories & Cleaners

Commercial Cooking

Cooking

Built-In Dishwashers

Portable Dishwashers

Commercial Dishwashers

Dishwasher Accessories & Cleaners

Dishwashers

BBQ Grills & Outdoor Cooking

Outdoor Kitchen

Patio Heaters

Outdoor Fireplaces & Firepits

Outdoor Heater Accessories

Garage Organization

Outdoor

Garbage Disposals

Trash Compactors

Air Purifiers

Vacuum & Floor Care

Heating & Cooling

Water Filtration & Treatment

Other Appliances

Commercial Appliances

Bakeware

Cookware

Cutlery & Accessories

Cutting Boards

Cooks Tools & Gadgets

Cleaning & Storage

Housewares

Blenders

Coffee & Espresso Makers

Countertop Grill & Griddles

Countertop Ice Makers

Food Processors

Fryers

Mixers

Toasters & Toaster Ovens

Ice Cream Makers

Vacuum Sealers

Small Appliances

Appliances

California King

King

Queen

Full

Twin XL

Twin

Mattress Sizes

Pocketed Coil

Wrapped Coil

Latex

Euro Top

Pillow Top

Tight Top

Box Top

Smooth Top

Innerspring

Memory Foam

Hybrid

Mattress Type

Extra Firm

Firm

Medium Firm

Medium

Plush

Ultra Plush

Mattress Comfort

Adjustable Bases

Standard Foundations

Low Profile Foundations

Ultra Low Profile Foundations

Foundations

Pillows

Bedding Protectors

Bedding

Serta

Beautyrest

Sealy

Tempur-Pedic

Stearns & Foster

Sherwood Bedding

Mattress Brands

Mattresses

Default Dev Script Validation

Serta® Perfect Sleeper® Cobalt Calm Medium Pillow Top Twin Mattress-1

1284634/b152d543-eff3-42c0-a94f-5558a73bef30.jpg

Say hello to your simple solution for perfect sleep every night.

Serta Perfect Sleeper

Serta® Perfect Sleeper® Cobalt Calm Innerspring Plush Pillow Top Twin Mattress-10

1284634/5e232ba9-05db-46cd-8041-76021c5ef553.jpg

Mattress Delivery What To Expect with Captions

7e7b2e5e-73bb-43b4-b78d-493651f0d186.mp4

Serta® Perfect Sleeper® Cobalt Calm Medium Pillow Top Twin Mattress-3

1284634/3965fb41-6fc6-4017-a3bb-09223eafff7d.jpg

Serta® Perfect Sleeper® Cobalt Calm Innerspring Plush Pillow Top Twin Mattress-4

1284634/1e83077c-35aa-4df5-ba64-c0ea37ace890.jpg

Serta® Perfect Sleeper® Cobalt Calm Innerspring Plush Pillow Top Twin Mattress-6

1284634/7d1112c6-0e6f-42d3-82f6-9e7a71aa2d07.jpg

Serta® Perfect Sleeper® Cobalt Calm Innerspring Plush Pillow Top Twin Mattress-7

1284634/04b337b8-2685-47ce-8e47-0bf9627f5789.jpg

Serta® Perfect Sleeper® Cobalt Calm Innerspring Plush Pillow Top Twin Mattress-5

1284634/d803aac8-2b6f-47df-b999-ffe72f68a135.jpg

Serta® Perfect Sleeper® Cobalt Calm Innerspring Plush Pillow Top Twin Mattress-9

1284634/54759a16-7970-4ac9-9952-70011db6b386.jpg

Serta® Perfect Sleeper® Cobalt Calm Innerspring Plush Pillow Top Twin Mattress-8

1284634/c2ced0f0-6512-409a-b4ae-e408915654c0.jpg

Serta® Perfect Sleeper® Cobalt Calm 15" Wrapped Coil Plush Pillow Top Twin XL Mattress

Cool Twist® Gel Foam - Cooling gel is swirled directly into a breathable foam designed to promote airflow and heat dissipation.

Cool Twist® Gel Memory Foam This unique design features cooling gel swirled into premium memory foam. This breathable memory foam helps enhance airflow and heat dissipation for a feeling that can only be described as a cool, contouring type of comfort.

PillowSoft® Aire Soft foam provides enhanced cushioning for exceptional comfort and promotes airflow through its unique, gently rippling design.

3 Zoned Coil Design - This 850-coil density system offers three support zones with targeted support for your lower back and hips and cradled comfort everywhere else.

Anti-Microbial Technology - Our anti-microbial mattress technology will keep your mattress fresh and clean from odor-causing bacteria.

Cushiony soft with pillowy, cloud-like top layer

Premium memory foam is temperature-sensitive; it may feel firmer in cooler temperatures and softer in warmer ones. For your preferred comfort, please allow several hours for your memory foam mattress to adjust to the room’s temperature

Meets Federal Fire Retardant Safety Standard

Serta has been in the sleep industry for over 90 years and has been dedicated the entire time to helping people like you find a solution to your sleep problems so you can finally sleep better than you ever have. We love helping people find their best sleep and this is why our brand exists. Serta has been in the sleep industry for over 90 years and has been dedicated the entire time to helping people like you find a solution to your sleep problems so you can finally sleep better than you ever have. We love helping people find their best sleep and this is why our brand exists.
We believe that mattress shopping shouldn’t be stressful. We also believe whether you are buying online or in-store, you should be comfortable during the entire purchase process. So no matter if you're a back, stomach or side sleeper or if you sleep at night or during the day, we have a product to help you get the sleep you deserve. Check out some of the things we’ve learned along the way that help us to continue to be able to bring new sleep innovations to the table.

*Mattress only, all other products sold separately. Images may not depict actual size.

SSB 2025 New Year Promo

SSB 2024 Fall Sale Event Promo

SSB 2024 Black Friday Promo

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support.