Light airbag back protection for your String harness. This removable Airbag can easily be adapted to the 2 different versions of the String harness and to the String Pack thanks to its velcro at the back, its two toggles and its side clips. It contains a stow-away zip pocket which will be very useful to store your rucksack before you take off. Its inflation system is efficient thanks to two side scoops; it is certified EN/LTF passing the remarkable shock absorption test up to 24G. This removable airbag protection is also certified EC, European standards for PPE.