850g Weight: --- 1000g)Dark blue Color:green， blueSpecification (L * W): 186 * 60* 2.5cm，190*70*2.5cm，200*70*2.5cm[methods of use]Will inflatable cushion flat on the ground， the air valve is screwed down， the air cushion will automatically inflate， about a few minutes， the air cushion can be sufficient gas (after the intake valves are not aspirated voice on behalf of is sufficient gas)， then the intake valve closed tight， the pillow part of the need to artificially inflate， hand pinch flat charging port and then blow with the mouth can be.To receive it. First of all， the valve is opened， and then from the edge of the other end curling to the opening of the gas valve is compressed air， after the completion of the exhaust the intake valve closed tight， finally can be put inside the bag back.[note] this product is automatically inflated (except for the pillow)， can not be used to inflate the cushion with a pneumatic tool， that will cause the 9 nodes to increase the force， and finally lead to damage!