100% SMELL PROOF - Activated Carbon Technology. We use a carbon filter that surrounds the entire bag to make this the ultimate smell proof backpack for your glass and accessories. You can transport your items safely and discreetly thanks to the carbon filter system used in this bag. Smell proof storage to put your mind at ease. WEATHER RESISTANT MATERIALS WATER PROOF COMBINATION LOCK - For Maximum Protection And Discretion. With a Fixed Combo Lock and Durable Metal Zippers, it is safe guaranteed for protecting your valuable items inside. Travel confidently knowing your items are secure and no unwanted smells are sneaking out. USB CHARGING PORT - For Phone, Vapes & Other Devices. USB interface with built-in cable design, great convenience for charging your electronic devices via connecting your own power bank. CONTEMPORARY STYLISH DESIGN - The mini smell proof backpack has a sleek low-profile design with grey fabric, a sub compartment with mesh side pockets. Its inconspicuous for your privacy. You can store your glass and herb in here safely.