This 5 inch and 6 inch gel memory foam mattress is built with airflow breathable jacquard cover to boost internal air circulation and reduce trapped heat during sleep.It adopts fiberglass-free construction,which brings a safer sleeping environment for adults,kids and users with sensitive skin.Designed with medium firm support,the gel-infused memory foam conforms naturally to the contours of your body,evenly disperses body weight and relieves pressure points across your shoulders,hips and waist.This mattress is vacuum compressed and packed inside a compact box for simple transportation and home setup.Once unpacked,allow 24 to 72 hours for the foam to fully expand and reach its intended shape and comfort level.It comes in multiple standard US bed sizes including Twin,Twin XL,making it a practical bedding choice for master bedrooms,guest rooms,apartments and college dormitories.