USB Charging Port Design -- There is a USB charging socket design on the side of the chest bag, which makes it more convenient and safe way to charge your mobile phone while walking or riding. The crossbody shoulder strap can be adjusted to the length you need.Durable Material -- Our small shoulder bag is made of PU Leather and Polyester Lining. The fabric is water-repellent and protects the contents of the bag from being splashed by a small amount of water. Password Change Tutorial -- The main bag of the sling shoulder bag uses a three-digit code lock to lock the pull card.The initial password is 000; the first time to change the password: after turning the password to the initial password number, press and hold the unlock button and do not release it, then turn the password to the password number to be changed , and release the button Come on. Remember that the numbers in the password wheel are the changed password.