12 Inch Twin XL Cooling Gel Memory Foam Mattress – Medium Firm Support with Pressure Relief & Temperature-Regulating Cover

Phase-change cooling cover actively manages heat for balanced sleep temperatures 3-inch gel-infused memory foam contours to the body and dissipates heat effectively 4-inch adaptive transition foam provides responsive support to all body curves 5-inch high-density base foam ensures long-lasting durability and foundational stability Ships compactly with easy unboxing; expands to 12 inches in 24-72 hours