General Note: Please allow 24 to 72 hours for your Mattress to regain its full shape. Any memory foam will expand faster in a warmer room. In cold temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding..Set Up: Simply take your mattress out of the box and enjoy watching it decompress. Jumping, walking, and sleeping on your mattress can speed up the process. 60" W x 75" L x 8" H,Perfect solution for Back To School, great for kids' rooms, bunk beds, and dorms The latest technology in memory foam mattresses, 2 inches of gel-infused memory foam for breathability and temperature regulation on top of 6 inches of high-density base foam for support, pressure point relief, and proper spinal alignment