Serta 10 inch, Twin Mattress, Medium Mattress, Gel Memory Foam Mattress, Cooling, Pressure Relief, Mattress in a Box, Twin Size Mattress

Top-Rated Comfort – Backed by 8,000+ reviews with a 4.6 rating, shoppers love its cooling gel memory foam, easy setup, and supportive feel—ideal for kids, guest rooms, and everyday sleepers alike Medium firmness: Made up of three unique and supportive layers Cool gel memory foam: Contours to your body for a cooler, sweeter sleep No-coil mattress: Made up of gel and foam layers for consistent comfort Durable foam mattress core: Provides edge-to-edge support Thoughtful, compact packaging: Uses 25% less cardboard than standard mattress-in-a-box packaging Versatile support: For better performance, use a box spring, an adjustable base, or another support system like a platform bed Tested beyond industry standards: Ensures lasting comfort and durability using CertiPur-US Certified foams Twin: 74.5" L x 40" W x 10" Twin XL: 79.5" L x 38" W x 10" Full: 74.5" L x 53" W x 10" Queen: 79.5" L x 60" W x 10" King: 79.5" L x 76" W x 10" California King: 83.5" L x 72" W x 10"