Sling Backpack with USB Charging Port

he shoulder bag is made of the latest Abrasion-resistant leather fabric on the outside, this fabric is smooth and shiny and looks great, and made of sturdy and durable polyester on the inside. Effectively prevent liquid from splashing into the backpack and soaking the contents of the bag. And this technology makes the backpack lighter, stronger and stronger. Abrasion-resistant leather fabric makes the sling bag version design clean and neat, full of fashionable texture.