Gregory Mountain Products Maya 5 Liter Women's Day Hiking Backpack | Trail Running, Mountain Biking, Travel | Durable Straps and Hipbelt, Helmet Compatible Pocket | Comfort on The Trail 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: Zippered main compartment with two internal mesh organizer pockets. Internal mesh security pocket. 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. Zig-zag exterior bungee strap. IDEAL USES: Day Hiking, Running, Cycling, Walking - WEIGHT: 0.15 lbs. - DIMENSIONS: 16.75" x 8.0" x 3.5"