Sup'Air Radical 4

The Sup'Air Radical 4 is an ultralight string-style hike & fly harness — three sizes, harness-only weight from 910 g in S to 970 g in L, EN 1651 certified (and EN 1651 / LTF certified together with the optional airbag module). With airbag installed total goes up to 2160–2260 g per size. Designed exclusively for paragliding (no aerobatics use), with towing approved and certified up to 120 daN max load.

The defining trait is configuration flexibility: pilots can run the harness as a sub-1-kg pure string for X-Alps-style speed missions, or fit the optional airbag module to bring it up to a fully certified ~2.2 kg lightweight harness with proper back protection. Reserve container takes 2.9–4.75 L reserves — fits most modern lightweight reserves. Backrest tilt adjusts 30–36 cm depending on size, seat depth 42–44 cm, with carabiner height stepping 45–47 cm and carabiner-to-carabiner distance 33–48 cm depending on size. Quick-out carabiners are not compatible — use standard paragliding connectors.