A. Adjustable crossbody bag The elastic strap of the chest bag can be adjusted in various ways. You can adjust the shoulder strap according to your preference. This crossbody backpack is suitable for both men and women. B. Large capacity This shoulder bag has multiple compartments and pockets, including a hidden security pocket, a phone pocket, and a large pocket, which can hold many of your items. The crossbody backpack can help organize your items, such as cosmetics, tissues, keys, mobile phones, iPads, passports, water bottles, umbrellas, etc. C. USB charging port and headphone jack The crossbody bag is equipped with a USB charging port and a headphone jack (mobile power supply is not included) - with a built - in USB cable. You can charge your phone through the USB charging port (connect your mobile power supply with the built - in USB cable). The phone pocket on the shoulder strap makes it more convenient to charge and listen to music while walking. D. Durable materials The crossbody backpack is made of nylon materials, which are durable, scratch - resistant, comfortable, waterproof, and lightweight. The high - density and sturdy carrying handle can reduce your burden and allow you to travel more easily. E. Multifunctional crossbody backpack This is a multifunctional bag that can be used as a crossbody bag, a crossbody backpack, a crossbody shoulder bag, a one - day hiking backpack, a travel chest bag, a casual one - day backpack, a messenger bag, and a business bag. It is suitable for occasions such as traveling, fitness, hiking, camping, cycling, family trips, offices, schools, etc. It is easy and comfortable to carry. You can enjoy a more relaxed and happier life.