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Reversible Airbag / Backpack for Radical 4

by SUP'Air

The Backpack airbag RADICAL 4 is a removable airbag module with an integrated rescue parachute pocket under the seat for on-demand safety. 


  • Integration on the harness Radical 4 by zipper
  • Subcutaneous airbag with integrated parachute pocket
  • Roll top: variable volume (S and M: 62L max and L: 67L )
  • New ergonomic shoulder straps, like a trail waistcoat, with two carrying options: Carrying High without a belt (Backpack light) and classic carrying with a belt (Backpack heavy)
  • Accessorised braces compatible with Supair flanges
  • Removable chest bar to fit the user's body type
  • Integrated pole and ice axe holder
  • Multiple Pockets easily accessible
  • Integrated pocket for Flask


The RADICAL 4 integrates the possibility to connect a removable airbag module / reversible backpack, including a parachute pocket integrated under the seat.

Pre-shaped, the airbag has been reworked compared to the Radical 3, it comes further forward of the harness and uses a new, stronger material. Certification tests have confirmed that the product offers optimum safety.

The airbag module is also reversible into a roll-top backpack, accessorized for the mountain (multiple easily accessible pockets, a baton holder, ice axe holder, camel-bag pocket...).  

Its new ergonomic straps and removable belt allow a high carry with a light backpack or a classic portage when the backpack is heavier.

The backpack is adapted to the pilot's morphology, with a larger backrest on size L than on sizes S and M.

The volume of the portage bag is larger than on the Radical 3, it has been designed to hold a Leaf 2 Light glider, a rescue parachute and a bowl helmet.

The ready to fly harness in size M weighs 920 gr, and 2190 gr with the airbag module.