The Birch Luxe Natural Mattress is an upgraded hybrid model, perfect for those interested in apremium, eco-friendly feel. It is made with naturally breathable materials including organic cotton,organic wool, and natural latex to provide pressure relief and spinal support. Additional upgradesinclude a Euro Top for added plushness and an extra comfort layer in the body of the mattress. Itincludes individually wrapped steel coils with full perimeter edge support and zoned lumbar support inthe base of the mattress. This mattress is GOTS and GREENGUARD Gold Certified to ensure thehighest quality from start to finish.