High Sierra Hydra Hike 2.0 4L Hydration Pack

High Sierra 2.0 4L hydration pack. The HydraHike hydration backpack is comfortable, convenient and made to last for all adventures. Main compartment is accessible through top zipper. Lightweight ripstop fabric. Insulated reservoir pocket + 2L wide slide reservoir included. BPA free reservoir has bite valve with on/off switch. 360 degree reflectivity: Be bold. Be bright. Front accessory pocket with organizer. Adjustable waist belt. Exterior daisy chain for attaching gear. 17.7" x 11.4" x 1.0".