Mattresses 10 Inch California King Medium Firm Gel Memory Foam Mattress with Cooling Cover | Foam | California King

Sleep cool and supported with this Twin XL 10-inch medium firm foam mattress—ideal for hot sleepers or anyone wanting pressure relief without sinking. The temperature-reactive cooling cover keeps you comfy all night, while layered gel memory foam and adaptive Fria foam cradle curves and align your spine. Shipped as a compact mattress-in-a-box, it fits through tight spaces (no special delivery!) and sets up alone in minutes—no tools or heavy lifting needed. Expands fully in 24–72 hours (no lumps!) and is CertiPurUS certified, so it’s free of harmful chemicals. Perfect for dorms, apartments, or quick move-ins—get the comfort you need without the hassle!