Features Enter your model number to make sure this fits. Cotton Material: 200D nylon ripstop with weather-resistant coating Volume: 915 cu in Support/Suspension: Air Mesh suspended back panel Shoulder Straps: breathable, ergonomic Waist Belt: yes Description Product Description Whether you're seeking high-speed thrills on downhill trails or heart-pumping singletrack climbs, make sure to bring the Dakine Seeker 15L Hydration Pack with Spine Protector along for the ride. Two liters of water is available hands-free at any time during your ride thanks to the high-flow Blaster bite valve, and the reservoir sits at the bottom of the pack so as not to throw your weight off when you're rallying around berms. The removable DK Impact spine protector is flexible under normal conditions but hardens up instantly upon impact in order to protect your spine from serious trauma. The suspended Air Mesh back panel offers breathablility for comfort in hot conditions and stabilizes the pack during wild rides. When you're catching a ride back to the top of the hill, the deployable helmet carry stores your full-face or trail helmet, and the main compartment provides enough space for gloves, snacks, and other riding accessories. A fleece-lined pocket protects your sunglasses or cell phone, and the reflective logo helps you remain visible when you ride back into town after sundown.