Features Material: [body] 210 D nylon ripstop, [bottom] P600D polyurethane coated, [waist belt] neoprene Volume: [size small] 1,098 cu in, [size medium/large] 1,220 cu in, [size x-large] 1,342 cu in Waist Belt: yes, neoprene Hydration Compatible: yes, 3 liters Reservoir Included: no Description Product Description Evoc's FR Trail Protector Hydration Pack provides enough gear, food, and accessory storage to ensure that your weekend rambles through the foothills aren't cut short by a lack of provisions. The hydration compartment also accommodates bladders of up to three liters, so the option to extend your day trip into the late afternoon won't hinge on access to a clean water source. An integrated rain cover protects your supplies from capricious spring weather, and external straps keep protective gear and your helmet in easy reach.