Gregory Mountain Products Maya 16 Liter Women'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. Women's-specific design. Zippered main compartment with two internal mesh organizer pockets. AMPLE STORAGE TO ORGANIZE YOUR TRIP: Stretch front pocket with bungee closure. 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, Walking - WEIGHT: 1.7 lbs. - DIMENSIONS: 18.0" x 9.5" x 5.5"