Best-selling Waterproof Outdoor Sports Backpack Shoulder Belt Bag For Biking Cycling Traveling Camping Hiking outdoor travel Hydration Pack 20L(Light Blue) This is a specially durable and reliable backpack in stylish and fashionable design The adjustable and breathable padded shoulder and chest straps to meet different requirements for both men and women Featured with a water bag with isolation layer to keep the temperature inside the water bag Dedicate breathable mesh bag in the bottom compartment specially for holding hamlet. High-visibility reflective stripes to improve visibility when in fog days or at night