【Multi-layer deep sleep design】:Iyee Nature 6 inch twin size Cooling-Gel Memory Foam Mattress is designed with a two-layer full-foam system.In order to improve support and heat dissipation,the mattress includes 1.5" memory foam and 4.5" high-density base support foam.Each layer is designed to create an important role in comfort,providing ultimate comfort and caring for your sleep.It fit for all frames,box spring,platform bed etc.Iyee Nature mattress queen size dimensions:75"*39"*6"..【Medium Firm Feel】:A mattress that is too soft has no support and is too hard cannot release the pressure.Iyee Nature Queen Size Mattress provides you neither soft nor hard sleep feeling.Wavy striped bedspread & memory foam layer provides more good ventilation,while dispersing body pressure.The high-density foam relieves pressure points and fits your body,providing unparalleled support at night,making you feel like sleeping on the cloud,improving your sleep quality,saying goodbye to back pain..【Healthy and skin-friendly】: Iyee Nature memory foam has passed CertiPUR-US and Oeko-Tex Standard 100 certification, does not contain harmful substances such as formaldehyde, mercury and other heavy metals, is healthy and environmentally friendly, ensuring that you and your family have no worries sleep. slow rebound memory foam, higher density, more delicate feeling, soft and skin-friendly, comprehensively relieves body pressure and makes you sleep more comfortable and cool sleep..【Mattress in a box】:Using vacuum roll pack design, the mattress packed in the Individually box is light and convenient, and can be easily carried and set up by one person. A good mattress can withstand compression and be durable. Soft without collapsing, high resilience, can support your body very well, very suitable for side sleeper, back sleeper, stomach sleeper..【Professional customer service】:We have a professional production R&D team and a professional customer service team. Ensure that you can buy the best quality and most cost-effective mattress with the best shopping experience. Iyee Nature queen mattresses have a 10-year warranty and a 30-day refund policy. If there is any dissatisfaction, please feel free to contact us.NOTE: Please allow up to 72 hours for the mattress to fully expand and for air out.