Features:Ultra tough 20D nylon fabric with TPU coating and sealed processing makes the sleeping pad moisture-proof and durable.4 inch inflated thickness keeps your body away from the cold ground to stay warm and comfortable.Multi-point columns and one-piece pillow provide an ergonomic support for your body and neck to let you enjoy a good sleep. Max. bearing: 200kg (440lb).With built-in pump, easy to inflate the sleeping pad by stomping on the inflating device; open the deflating valve to deflate instantly.Side buttons allow you to connect one sleeping pad with another to make it a double-person pad.Folded up, fixed by an elastic band and stuffed into the included sack for easy storage and carrying.Great for backpacking, camping, car traveling, hiking, beach, and other outdoor activities.