【Small Size, Large Capacity, Lightweight】The sling bag is lightweight, very durable and sturdy! It's small enough not to feel like a backpack, but large enough to carry a lot. Only 11.8 x 8.7 x 3.9, 350g/0.77lb, small zippered pocket for phones, power bank, wallet or outdoor/travel items. Perfect for daily use. 【USB Charging Port】This everyday sling bag comes with a USB charging port, which is very convenient for charging your electronic devices by connecting your own power bank (power bank not included). You can connect your phone and easily charge during outdoor activities and travel, very practical and fashionable, connect your phone and be on the go. 【High Quality Material】Sling bag for men and women is made of high quality nylon, waterproof, dirt-resistant, lighter and easier to care for. Sling backpack with excellent workmanship can show your outstanding temperament. Lightweight sling backpack sits nicely and freely on your back/chest and if this hiking backpack for men gets dirty, you just need to wipe it to keep it clean. 【Durable and Breathable Design】This sling bag is made of mesh material. It is very soft and breathable, so when you sweat a lot and there is a mesh on the back that can dry quickly, you don't have to worry about it. The breathable back pad for your comfort. 【Multiple Occasions】Sling bag for women and men is perfect for multiple occasions. Sling backpack for hiking, walking, cycling, hunting, travel, business, gym, camping, beach and daily use. Works perfectly as a sling bag, wear this black sling bag over either shoulder comfortably, or across the chest to deter thieves and keep your hands free. If the buyer encounters any problem with the product, look forward to your message!!