Four-sided Magnets: The bottom of the motorcycle bag has magnets on four sides, strong magnet, easy to attach to all kinds of motorcycle fuel oil tanks. WEAR-RESISTANT AND DURABLE This motorcycle backpack is made of high-quality carbon fiber + 1680 Oxford cloth, scratch-resistant for durable use. Waterproof Phone Case: The 6.5 inch phone case is made of waterproof PVC material, no need to worry about your phone getting wet from water and rain. Touch screen design is very convenient to use navigation or reply to message when you are riding. Dual Use of Tank Bag and Shoulder Bag: The tank bag is equipped with a portable handle, fine workmanship, strong and durable, and comes with a removable adjustable shoulder strap, you can use it as a shoulder bag or crossbody bag when you are not riding. Small Size, Large Capacity: Independent compartments, separate space for phone, charger, pens, earphone, laptop, keys, gloves, etc.