Features: Nylon Material: Made from nylon material, it is waterproof and wear-proof, lightweight to wear, durable for daily outdoor activities. Water Bladder Compartment: Large enough to carry a 2L water bladder (not included), or folded umbrella, clothes, etc. Front Zipped Pocket: Front zipped pocket with interior mesh compartment and interior zipped mesh pocket to carry maps, cards or cash. Mesh Pockets: One mesh pouch pocket to front and four mesh pockets to shoulder straps, conveniently carry towel, tissue or other essential items. Adjustable Straps: Adjustable shoulder straps, adjustable chest straps and adjustable waist straps to fit your size and keep the backpack from moving. Reflective Trims: Reflective trims increase visibility for safer cycling, walking, and jogging at night. Convenient Outdoor Backpack: Fits for cycling, running, hiking, camping, and short trips. Insulated Bag: Comes with an 11.8X5.5 (30X14CM) insulated bag for water bladder, keeping the water cool in summer.