Serta Perfect Sleeper Cobalt Calm 12″ Extra Firm – Mattress + Box Spring

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 for even more cooling and comfort.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 for even more cooling and comfort.

• Cool Feel™ Fabric – a luxurious, breathable cover with a cool-to-the-touch sensation from technology that is plant-derived. Our biobased phase change material consists of 53% biobased content and is certified through the USDA Biopreferred® Program.
• Antimicrobial Mattress Protection – keeps your mattress fresh and clean from odor causing bacteria. This product protects the mattress but does not protect users against bacteria, viruses, germs or other disease organisms.
• Cool twist® Gel Memory Foam – this breathable, gel-infused memory foam gently cradles your body while promoting enhanced airflow.
• 850 Edition Custom 3 Zoned Support Coil System – this system of individually wrapped coils provides contouring, cradling support from edge-to-edge, minimizing the impact of your partner’s movements
• Proudly 100% USA Assembled
• Compatible with most frames, platforms and adjustable bases.
• We only use foam that is CertiPUR-US Certified.

• Mattress Top Type: Tight Top
• Mattress Type: Innerspring
• Included: 1 Mattress(es), 1 Box Spring(s)
• Features: Temperature Regulating, Antimicrobial, Foam Layer, Wrapped Coils
• Additional Information: Conforms To Body
• Coil Count: 493 Coils
• Manufacturer Warranty: 10 Year Limited
• Bed Size: Twin
• Measurements: 12 Height/Inches, 40 Width/Inches, 76 Length/Inches
• Maximum Weight Limit: 1000 Lbs
• Base Material: 90% Metal, 10% Foam
• Comfort Type: Extra Firm
• Mattress + Box Spring Measurements: 40 Width/Inches, 21 Height/Inches, 76 Length/Inches
• Care: Spot Clean
• Certifications And Listings: Certipur-Us Certified
• Mattress Height: 12″
• Country of Origin: Made in US

• Visit our for delivery options, protection plans and other services.
• Problem with an order or need help with a return? Our Furniture & Mattress Customer Service agents will be happy to help.Give us a call at 1-800-322-1189
• Don’t forget to print off your to avoid any delays or issues when delivering your item.

Set includes mattress plus box spring/foundation/base. Larger size mattress sets may feature 2-piece side-by-side foundations for easier navigation in tight spaces.