The Osprey Savu Lumbar Bottle Pack is the perfect simple mountain biking pack for short rides in optimal comfort. Osprey combines the ventilation of their signature AirScape panel with the minimalist design of a lumbar pack to keep you hydrated without the burden of a full internal reservoir. Two rigid stowable bottle pockets allow room for your water when you need it and a sleeker pack when you don't. Toss a spare tube and some trail mix in the zippered main compartment and you're ready for a quick session on your local trail.