Gregory Mountain Products Miwok 18 Liter Men's Day Hiking Backpack | Trail Running, Mountain Biking, Travel | Durable Straps and Hipbelt, Helmet Compatible Pocket | Comfort on The Trail Base 100D NylonLining 200D Embossed PolyesterHarness/Hipbelt/Lumbar EVA Foam, AirmeshChasis Support HDPE and EVA Foam BIOSYNC SUSPENSION: BioSync Suspension technology keeps the pack moving with you for unrestricted motion. Zippered main compartment with two internal mesh organizer pockets. AMPLE STORAGE TO ORGANIZE YOUR TRIP: Expandable stretch front pocket with tuck-away bungee closure fits helmets. Dual external side pockets. HYDRATION COMPATIBLE: Hydration sleeve with external access. Shoulder strap hydration tube clip. Shoulder strap sunglass loop. SAFETY LIGHT ATTACHMENT & EASY ACCESS TO IMPORTANT GEAR: Low-profile safety light lash point. Dual quick-access hipbelt pockets. Side compression straps. IDEAL USES: Day Hiking, Running, Cycling, Commuting - WEIGHT: 1.6 lbs. - DIMENSIONS: 19.5" x 10.25" x 6.5" Pockets: 1 interior zip, 6 exterior