Technical data Size M L Pilot height cm 155-185 178-202 Chest strap width cm ~39 ~42 Harness weight kg 0.420 0.440 Harness certification EN 1651:2018+A1:2020 / 120kg EN 1651:2018+A1:2020 / 120kg Package 2x Maillon Rapide 4x O-rings Reserve handle with inner container Storage bag Getting Started Booklet Optional extras SQR Light 2 STRAPLESS 4 Tandem spreaders Light See Related Products. Flybubble Note: Ultra-light gear must be handled with care to extend its lifespan. Mechanical stresses and improper handling can cause faster wear and tear compared to standard-weight gear. Designed for hike and fly activities, ultra-light gear prioritizes weight savings over durability and other factors. To avoid damage, refrain from extreme activities or excessive ground handling. Gentle treatment is crucial for longevity and safe operation. STRAPLESS BI 4: Ultralight tandem harness - ultralight mountaineer Light Easy handling Practical Features Adjustable shoulder straps Chest strap closure system Channel for reserve V-lines Reserve compartment Materials Main straps D-Pro, 4mm, 13kN Leg straps D-Pro, 4mm, 13kN Outer covering Skytex 32 universal Seat area Nylon 40 BE - DE R/S Carabiner MR Standard 5mm Advance product registration Register your Advance product here. Downloads See Advance downloads.