Weight 384g FAQ How to install it? First open the compartment under the leg loops and the hook and loop fastener that secures the builtin protector. Remove the existing protector and push the inflatable one into the compartment so that the silicone tube hangs out towards you. Now inflate the protector completely to check that it fits correctly. To do this, push it as far back as possible, then close the fixing straps with the hook and loop fastener, thread the hose from the inside to the outside through the outlet and finally close the zip of the parachute compartment. Then you can deflate the protector and pack the harness. Important: the protector must be fully inflated before each flight so that it can provide its full protective function. The ARTUS AIR protector does not replace the protection provided by the back protector.