There is plenty of space in the Osprey Stratos 26 Backpack for all your gear whether you're hiking, mountain biking, or climbing for a day. The designers at Osprey shaped this pack's LightWire alloy frame in such a unique way that it optimizes your load's balance as well as enhances the ventilation system with the help of the AirSpeed back panel. Add that to the sewn in spacer mesh at both the waist belt and the shoulder straps, and you're ready to tackle anything in the mountains without a sweat. The waist belt utilizes ErgoPull straps for an ideal fit. Made with a blend of high tenacity nylon and 420HD nylon overlays, this pack is super durable and will handle rocky scrapes and dirt dragging for years, and Osprey even integrated a rain cover so you can continue your mountainous adventures in poor conditions. The Stratos 26 features sleeping pad straps that you can remove if sleeping outside isn't part of the agenda, side mesh woven pockets for water bottles, and zippered pockets at the waist belt for any small item you want quick access to like lip balm or sunscreen. Both the upper compression and lower InsideOut straps compress all your gear so it doesn't move around when you're riding. Stow On The Go attachments at the shoulder straps accommodate your trekking poles when you don't need them, and there is an ice tool attachment below the pack so you're ready for year round mountain adventures.