Our lightest mountain bike pack ever built for the most intense high performance rides we wouldn39t even call airborne 2 a lightweight its more of a featherweight pack that delivers outstanding fit and functionality for 1 3 hours fast racing with its ultralight weight and its no more dancing monkey harness technology this pack is virtually unnoticeable while in action inside the pack the airborne 2 has a slim profile shape shift 16 litre hydration system and for your safety a water resista