Osprey Siskin 8L Hydration Backpack for Men - Lightweight Bike Pack with 2.5L Water Reservoir, Breathable Design - Perfect for Cycling, Hiking & Outdoor Adventures (Dustmoss Green)

When a pack that holds only water is too small and a pack that holds everything is too big, the Siskin 8 is just right. A direct-access zip path leads to an included 2.5-liter reservoir, and a U-zip main compartment opens wide to stuff a spare tube, and flat repair tools. A mesh-covered foam backpanel offers ventilation and allows for lively movement while keeping your pack close. The front of the pack features a LidLock attachment for a helmet, while side compression straps fit a full face.