The Nuzzle Snuze Stokke Sleepi crib mattress, is unlike any other crib mattress. Using an innovative material called NaturesWeave, a matrix of fibers that enhance the open air construction of the mattress and creates the ideal sleep environment for a perfect night’s sleep. Mattress with ultra-soft organic cotton cover (using certified Organically grown cotton). Backed with a food grade waterproof backing, soft touch side is facing the child for comfort. Natures weave innovative material allows for maximum freshness and airflow. This should show pretty well on the samples we made up. Extra firm middle layer helps support babies growing bones. Modern inside seam avoids using traditional binding Greenguard certified for harmful emissions. Free of questionable fire-retardant chemicals. Natural fire protection with a barrier wrap. Handcrafted in the USA by a third-generation family owned company.