Come and see our amazing products. The ergonomic design of shoulder straps, widened and padded with breathable mesh material, provides a more comfortable usage experience. Weight balanced design allows you to feel weight loss to 20%. Anti-theft design with 10+ secure compartments and hidden zippers. With a built-in USB charging port, it offers a convenient charging of your electronic device anywhere (this bag doesn't include a battery, so you need to prepare a power bank for it). Pls confirm further with us if any query about packing info, inventory status and time schedule.