1. USB Charger Port: This backpack comes with a USB charger port to charge your electronic devices by connecting your own mobile power, which makes it a more convenient and way to charge your mobile phone while walking or riding. The crossbody shoulder strap can be adjusted to the length you need. 2. Mechanical Combination Lock: Equipped with a highquality mechanical combination lock, this Carbon Fiber Streamline Antitheft Sling Bag effectively prevents theft and keeps your valuables secure. 3. Increased Visibility with Reflective Strips: Designed with reflective markings, this bag enhances visibility in lowlight conditions, making nighttime travel r. Whether you're walking, cycling, or commuting, you'll be seen more easily. 4. and Scratch Resistant: Scratch Resistant Material Prevents Cuts and Wear Marks. and Dropproof Material Keeps Your Items Dry at All Times. Sling Bag is Made of Highdensity and Tearresistant Oxford Fabric. Metal Zipper Closes and Opens Smoothly to Ensure Safe and Longlasting Use Every Day.