Osprey's Verve 5 is a minimalist hydration pack. Lightweight and durable, it's made from triple ripstop polyester material and includes a 70-ounce Hydraulics reservoir. For storage, there's a main compartment, a sunglasses pocket, a shove-it pocket for a jacket, and Osprey's LidLock helmet clip. Other features that will have you singing this pack's praise include a comfy BioStretch harness, a ventilated back panel, a removable webbing hipbelt, and a magnetic hose attachment that keeps your bite valve put no matter how rough the trail gets.
Viper and Verve Series ~ Osprey Hydraulics
Osprey LidLock Tech Video