This 12 inch gel memory foam mattress is a medium firm mattress covered with a soft and breathable fabric. The memory foam mattress suits back/side/stomach sleepers since it can automatically adjust according to the spine curves of the human body and effectively relieve pressure. Besides, the gel foam mattress can lower the motion transfer to guarantee the undisturbed sleep, also regulates the temperature to offer you a cool sleep, and relaxes your body for deep sleep. Coupled with the comfort foam and high-density base foam, the mattress is not too soft or too firm so that the sleepers won't sink into the bed while sleeping, or have back pain. We are committed to creating a comfortable and affordable mattress for our customers. 1. What will you get from mattress?Medium firm feel with a balance between support and soft.It's a mattress for side sleepers, back sleepers, or stomach sleepers. This gel mattress will provide you with contouring comfort and keep your spine healthy. Also, it can reduce noise when your partner turns over. A mattress for adjustable bed, platform bed, etc. A mattress in a box that is packed well.Note:Please allow 72 hours for your mattress to air out and fully inflate for better performance. Any memory foam will expand faster in a warmer room. In cold temperatures, It may take a bit longer to return to full size from its compressed state.It is normal if there is a slight odor for a new gel foam mattress. Giving it two days to dissipate is recommended.Product DetailsComfort Level: MediumMattress Type: Gel Memory FoamMattress Top Type: Tight topTwin size: 75" x 39" x 12"Full Size: 75" x 54" x 12"Queen Size: 80" x 60" x 12"King Size: 80" x 76" x 12"