Flexzion Bike Rear Seat Trunk Carrier Rack Bag - Bicycle Cycling Multi-Function Tail Basket Luggage Package Bag Quick Release with Reflective Trim Shoulder Strap for Travel Touring Outdoor Large Capacity - This bag includes a main compartment, 3 side pockets and a bottle pocket, 6L large capacity, large enough to keep your essentials well organized. The internal patch pocket makes space effectively used Higher Visibility and Safety: The wide silver grey reflective strip increases nighttime visibility and the hanger on the strip can hold a taillight which can also enhance cycling safety at night Easy Installation - Fastener strap for easy and quick installation & uninstallation on all types of bicycles with a rear seat, such as mountain bike, road bike, etc Multiple Function - With carrying handle and adjustable shoulder strap, the bag can be used as a handbag and shoulder bag as well Good Protection - The elastic band on the top of the bag can help to keep your water bottle, clothes or maps securely on the bag. High quality 600D polyester material construction with solid structure and PE cotton filler, provides your items with full protection. Dual U style zipper design closure allows you to easily store and take out things