Advanced Sleep Technology products s are designed with scentific research in mind. The AST line of memory foam and latex mattresses are carefully constructed to blend medical research data with years of experience working with foam products. Advanced Sleep Technology products are a balanced blend of science, comfort and artistry in order to offer the perfect visco-elastic memory foam products. Advanced Sleep Technology has taken bamboo charcoal and combined it with their 100% pure visco memory foam to create the 8 Black Diamon Visco Memory Foam Mattress This mattress offers a soft sleeping surface with medium support. Visco Memory foam contours to the body and relieves pressure points, yet supports the body weight with its supportive base foam. This mattress also features the AST patented Wedge, Edge to Edge support system for 20% more sleeping surface. The Air Channel base neutralizes the temperature of the mattress as it absorbs body heat. This ensures optimized comfort throughout your sleep experience. The mattress is covered in a bamboo blend fabric.100% Pure Visco Elastic Memory Foam Cover is removeable and wasable Patented Wedge Edge to Edge Support System 3 4 lb Black Diamond Visco 5 Air Channel Base 3x3 Wedge Bamboo Blend CoverAssembly Required: No Max Depth: 8-1 4 Max Height: 74-1 4 Max Width: 38-1 4 Min Depth: 7-3 4 Min Height: 73-3 4 Min Width: 37-3 4 Size: Twin Weight: 33