Function:Self-inflating mattress can be used in various occassions such as in the camping, trekking, meadow, beach, car, truck, boat and wherever.Our durable and reliable fabrics together with the high resilience foam make your outdoor life more enjoyable and more convenient. You can also customize the thickness of the foam to make your self-inflating mattress either thinner, lighter and easier to carry, or make it thicker, more comfortable. How to Use On Initial Use:1. Spread self-inflating mattress or seating cushion or pillow 2. Open the gas nozzle, enable the mattress automatically expand. 3. Close the gas nozzle and put it repeatedly to fold. Then exert press several times. 4. Finally open the valve to let the mattress inflate automatically. 5. It is to allow the mattress restore its elasticity and shape after long storage. How to Inflate:1. Spread the mattress and open the gas nozzle to allow automatic inflation.2. Tighten the gas nozzle cap when the mattress reaches its full expansion.How to Deflate:1. Open the gas nozzle, roll up the mattress and at the same time press it to deflate.2. Close the gas nozzle and strap it. Then pack it into the same color polyester bag or waterproof bag.