????【Outdoor Grade Material Different From the Market】The back of the air mat is 50D Polyester pongee + multi-layer TPU, so it won't tear even if you use thick branches. The front of the air mattress is made of sturdy 50D Polyester pongee material + multi-layer waterproof and durable TPU material, which is strong, soft, no noise and waterproof, so you can just wipe it down with a towel even in the rain.