"Delivering 25% more water per sip than previous models, the CamelBak 3L Mil Spec Crux Hydration Reservoir keeps you well hydrated so you can keep the adventure going! An integrated QuickLink Hydrolock lets you turn the flow on or off with one hand, plus Hydroguard Technology fights bacterial growth to keep your water clean. An insulated drinking tube cover keeps your water from getting too warm or cold, plus it fights UV damage. This CamelBak water bladder boasts an angled exit port that makes it easy to add in-line accessories like a purifier. The self-sealing bite valve won't drip and is incredibly easy to get a drink from. An easy-open cap keeps the valve clean, while a fill handle makes refills a cinch. The CamelBak 3L Mil Spec Crux Hydration Reservoir is BPA-, BPS-, and BPF-free.Manufacturer model #: 1944001003. Delivers 25% more water per sip than previous models QuickLink Hydrolock for one-handed on and off Hydroguard Technology keeps surfaces clean Insulated drinking tube keeps your water a refreshing temperature Angled exit port for easy add on accessories Self-sealing bite valve with an easy-open cap BPA-, BPS-, and BPF-free Specs: 18""H x 9.4""W x 1.4""D Weight: 9.95 oz. Capacity: 3L Polyurethane construction"