Built-in USB charging cable: This bag is designed with an external USB charging port so you can easily charge your phone. SMALL SIZE, LARGE CAPACITY: Our waterproof crossbody bag features a total of 7 pockets - the main compartment has 4 zippered pockets and 3 insert pockets, providing ample space for all your essentials (secures iPad mini only). This crossbody backpack measures 11.8 inches high x 2.7 inches wide x 7.08 inches long. LIGHTWEIGHT WATERPROOF SHOULDER BAG: This men's shoulder bag combines high-quality material nylon with high-tech waterproof technology to create a waterproof, tear-proof surface to ensure your belongings stay dry and fresh even on rainy days. This sling backpack is padded with thick foam and a breathable mesh back panel to help with ventilation and heat dissipation. Weighing only 0.7 pounds, it is lightweight and portable. Multiple ways of wearing: This waterproof crossbody sling backpack is equipped with an adjustable shoulder strap (in the main pocket) and 4 buckles on the four sides of the bag, which can be worn in a variety of ways according to personal habits (Picture 2 below) . With the soft, padded hand strap, you can even use it as a handbag. Ensures light weight for daily carrying and long-lasting use. Versatile casual backpack: Stylish, unisex and efficient. This sling backpack is unisex and suitable for offices, schools, outdoors, business, cycling and other occasions.