Joseph memory foam 6" twin extra long mattress by Coaster NEW SPECIAL ORDER CO-350062TLRetail price $363. Special order only; usually takes 5 14 days to come in. CertiPUr US certified foam improves air quality and is flame retardant. Quality materials and durable construction ensure you can feel good about this mattress investment for years to come. The thick CertiPUR US certified foam cradles every contour of the body, providing a satisfying combination of comfort and support. 3 year mattress warranty, recycling fee applies 38x80x6H,