External USB Port: Integrates a built-in charging port with an external connector, allowing you to power your smartphone on the go by linking it directly to an internal power bank.Anti-Theft Lock: Features a 3-digit combination number-locking system that securely locks down the heavy-duty main compartment zippers.Resilient Construction: Made from high-density, waterproof, and scratch-resistant nylon fiber to keep hardware safe from unexpected weather.