Redesigning to go the distance with you. Our M.U.L.E.A(R) Hydration Backpacks are already MTB&';s best friend, but we&';ve updated the classic go-to pack so you&';re never left trailing behind. Expect the same trusty M.U.L.E.A(R) with slight body modifications for a smooth ride and fit. What makes the M.U.L.E.A(R) 12 Hydration Backpack redesign so exciting? For starters, it&';s the perfect size, comes with premium hydration and has all the features to make every bike adventure awesome. In addition, we&';ve supplied smart storage options, with an overflow pocket for an extra layer or wet rain jacket. We also supplied a removable stability belt for added flexibility and comfort. Another key addition is our Magnetic Tube Trap(TM) that works with all of our reservoir tubes. We&';ve included Air Support(TM) Back Panel, lightweight materials, and max ventilation to keep you feeling and looking cool on the trail. Finally, our reservoir with Quicklink(TM) System ensures you get all the hydration you need on the move, with no fuss. Features Air Support Back Panel: Designed with Body Mapping Technology to allow for maximum ventilation on the hottest areas of your back Magnetic Tube Trap: Keeps your tube secure and accessible when you need it Removable Waist Strap: Added stability when you need it 3D Vent Mesh Harness: Lightweight and breathable with added cargo. Designed for all-day comfort Helmet Carry: Stow and secure helmet Stretch Overflow Pocket: Quickly stash or shed an extra layer Integrated Carry Pockets: Keep your tools and repair kit organized Specifications User Group Unisex Dimensions 18.5 x 8.27 x 2.48 in / 47 x 21 x 6.3 cm Material Sustainable Nylon Weight 1 lb 4 oz. / 580 gm Back Panel Air Support Quick Link Yes Waist Belt No Hydration Type Included: Crux 3L Reservoir with Quicklink System Torso Fit Range 17" - 21" Gear Capacity 9L Hydration Capacity 101 oz. / 3 L