The Davies Sports safety mattress is an essential addition to your safety apparatus. Made from a high resilience modified polyurethane foam inner which is encased in a really heavy duty, flame retardant PVC cover. There are breather holes on the outer casing meaning the air can expel depending on the level of downward momentum, providing a safe cushioned landing area. ;. Includes side toggles to allow multiple mattress to be laid together and linked safely. Carry handles to allow for easy transportation. Zip fasteners make removing the cover easy should the need arise.