Features: Nylon Material: Made from nylon material, it is waterproof and wear-proof, lightweight to wear, durable for daily outdoor activities. Large Main Compartment: Large enough to carry a 2L water bladder (not included), folded umbrella, smartphone, etc. Front Zipped Pocket: Extra front zipped pocket with adjustable bungee 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.