This spacious pack is ideal for challenging multi-day alpine traverses by mountain bike. The clever layout, with tool and pump compartments, for instance, plus a handy front stash pocket which can also accommodate a helmet, plus a subdivided main compartment give this pack easy handling and clever organization. The deuter Airstripes back system allows air to flow across the back for good ventilation while creating a snug, solid fit for tackling challenging trail sections without load wobble. Features Airstripes System Adaptable aluminum frame stays Ergonomically padded shoulder straps Load adjustment strap 2-way adjustable sternum strap Safety whistle Glasses stow system on shoulder strap Hip fins ventilated snug hip fins Round arch opening with zipper Wet laundry compartment Compatible with 3.0 liter drinking system/bag Front pocket: mesh with buckle closure tool organizer SOS label Inside compartment to keep your valuables safe Key clip Side pocket with zipper for air pump Side smartphone pocket Removable rain cover Main compartment with zip-out divider Attachment loops Compression straps Reflective details Removable sitting mat Helmet attachment Airstripes back system