The compact Osprey Viper 5 hydration pack is built for short and fast mountain bike rides, offering a low-profile design and a 2 liter hydration capacity to quench your thirst as you rail trails.

• Hydration system features a 2 liter (70 fl. oz.) reservoir that conforms to back's shape even when full, resulting in a precise, stable and comfortable fit
• Rigid spine/handle stabilizes the reservoir, making it easy to slide it into its dedicated compartment; large mouth makes filling/cleaning easy
• Hydration reservoir pocket has zippered access that extends onto shoulder strap, letting you remove, refill and replace reservoir and drink tube quickly and with minimal fuss
• Low-profile padded mesh back panel and mesh shoulder straps offer next-to-body comfort; sternum strap has a magnetic attachment for keeping bite valve accessible
• Main compartment has tool organization sleeves and a mesh pocket is ideal for carrying pumps, bike tools and tubes
• Front zippered pocket has additional mesh pockets for more organizational options; key clip secures keys
• Quick-access top zippered pocket is lined with a soft, easy-to-clean heat-embossed fabric that helps keep sunglasses or other fragile items from getting scratched
• Quickly attach a helmet to the Viper 5 with the LidLock helmet clip; bungee on the exterior of the pack allows easy adjustment of the LidLock feature
• Shove-it pocket can be cinched down to secure bulky items like a jacket
• Compression straps help stabilize pack and contents; removable webbing waistbelt helps stabilize pack
• Reflective trim increases visibility in low light
• The Osprey Viper 5 hydration pack sports a BPA- and PVC-free reservoir that does not retain tastes or odors and features an antimicrobial treatment to deter bacterial growth