The RADICAL 4 is the pioneer harness for hike and ﬂy. In its fourth generation it still loves the mountains and vertical slopes.
The Radical 4 turns into a reversible backpack for walking up. It incorporates the possibility of connecting a removable airbag module with an integrated rescue parachute pocket under the seat for safety on demand… and mainly simplicity at every step.
Walk lightly, put into action easily, ﬂy with conﬁdence. The Radical 4 takes you up into the mountains, with a take-oﬀ from an incomparable viewpoint, at the time of the ascents, after a phase of skiing, fast-hiking or even climbing.
Its reﬁned design embodies the spirit in which it was conceived: to keep only the essential to magnify the experience in ﬂight. Its light weight does not reduce its comfort, thanks to its foamed back, neither its eﬃciency in turns: the support is precise, damped (the independent leg straps, stiﬀened with mylar, erase the irregularities of the air mass) and balanced (its structure erase the parasitic movements).
The Radical 4 gives “a feeling of smooth control, of controlled glide”, describes Yoann Chavanne, its designer. This soft precision in piloting is explained by its capacity to deform itself to adapt to the body of the pilot.
Well accessorized (pole holder, removable chest strap) the Radical 4 reveals itself in its ﬁnishing details. We touch with our eyes: every useful detail, every worked ﬁnish, every material chosen for its nobility and durability. The structure of the strap and the frame, the subcutaneous airbag relocated in front of the harness and using a rush designed with a resistant material, have been thought to improve safety. The backpack and harness have been designed separately to push the technical and aesthetic solutions to their limits.
Freedom, lightness, simplicity, because when there is nothing left to remove, the important thing remains.
Mountain ﬂights and progression
Tandem pilot or passenger
No seat plate, but leg straps to reduce weight
Opening of the harness by the carabiners
Self-stabilizing leg-strap system
Pre-equipment for parachute (shoulder rescue straps, reserve parachute riser in chest and subcutaneous position with Airbag module)
With the Airbag bag: Airbag shock absorber, subcutaneous parachute pocket
Gear / Comfort
Back with stiﬀening foam and comfort foam
Semi-rigid ergonomic leg straps
Dorsal pocket ( approximately 10 L)
Hydration pipette hole at the top of the dorsal pocket
Micro vario fastener on right shoulder
Chest strap adjustment
Adjustable backrest support incline
Shoulder straps adjustments
Dyneema and polyester webbing
Nylon 210D Ripstop and Nylon 70D Diamond ripstop