Includes 2L Hydro reservoir with Easy-Fill and handle and leak-proof bottle style cap Dedicated 3/4 zippered hydration sleeve with SpeedClip hydration hanger for a one-handed, snap-and-go connection Inline hose quick-disconnect coupling for easy refills without having to un-thread the hose from the shoulder harness Perforated shoulder harness with magnetic sternum buckle and hose clip for the Drylock bite valve 3D foam backpanel with supportive multi-density foam Removable webbing hipbelt Meet the Inertia 18 H2O daypack, where comfort and convenience collide. An included 2L Hydro reservoir and perforated 3D foam backpanel provide a complete hiking hydration system ready for all-day adventures.