This is a steady deceleration tool used by paratroopers for airdrop and parachute training. It is the heaviest weight parachute carrying a parachute in human beings, in addition to human body weight, but also need to carry a certain amount of weapons and equipment. This umbrella requires a safe and reliable, suitable for large loads and intensive parachuting, with a certain color to protect the skin characteristics. This kind of umbrella requires sufficient strength to the material, and the air permeability of the umbrella clothing should be appropriate. The air bag of the umbrella clothing should adopt the textile material which is light, elastic, good in floating and high in the quality ratio.