The Proof 28 combines the best of both worlds! You start with the bike in the new mountain adventure and need a narrow cut, flexible backpack. Then it goes on a challenging route towards the summit - robust equipment is needed, which can withstand even a rougher treatment. The Proof 28 does all that - and much more. The solid Bike&Hike backpack has a flexible, movement-friendly EMP back plate. Particularly practical is the removable outer pocket for GPS, maps or other things that need to be quickly at hand; alternatively, a cord spider can be attached to which additional accessories such as a helmet, jacket or poles can be attached. Just the way you need it at the moment. For quick access to the main compartment provides the proven waterproof roll closure, which makes the backpack a real all-rounder in terms of range of use, weather suitability and packing volume. Other highlights come right at the end: the extremely abrasion-resistant, bluesign®-certified main material consists of 64% recycled Econyl. The Proof 28 is welded environmentally friendly at the company site in Germany in high-frequency technology waterproof.