"Stay hydrated while taming tough backcountry trails this summer with our Ascend Current 4L Hydration Pack. Built around a 2L Ascend hydration reservoir, constructed of naturally BPA- and PVC-free metallocene, the Current's high-performance hydration system comes with a flexible 1/4"" hose, and fully cleanable, anti-backwash Ultra Valve Bite Valve that rotates 360 for easy use. Constructed of a tough 400-denier nylon, this top-loading pack is built to stand up to rugged and demanding use on the trail or on the road. Outfitted with ventilation channels, the padded breathable mesh back panel works with the pack's ventilated shoulder straps to help you haul the pack in comfort. Tough YKK zippers with easy-pull string loops stand up to heavy use for long-lasting, dependable service, while 2 exterior accessory pockets and 1 stretch stash pocket readily stow your essentials for on-the-go convenience. Side compression straps offer additional stability and a compact footprint, while reflective webbing accents and a blinker light attachment ensure enhance visibility and safety. Imported. Handy hydration and gear transport for outdoor adventures 2L hydration system Naturally BPA- and PVC-free reservoir with baffles Flexible 1/4"" hose with anti-backwash Ultra Valve Bite Valve Ventilated shoulder straps with sternum strap Padded breathable mesh back panel with ventilation channels 2 accessory pockets and 1 stretch stash pocket Tough YKK zippers Side compression straps Top-loading design Specs: 18""H x 4""W x 11""D Capacity: 4L Weight: 1 lb."