LARGE CAPACITYThis bag features one main compartment, two side pockets and one back pocket, large capacity, large enough to keep your essentials organized. The inner patch pocket makes effective use of space. HIGH VISIBILITY AND SAFETY: The reflective stripe increases nighttime visibility, and the hanger on the stripe can hold a rear light, which also ensures safety when cycling at night can increase. EASY INSTALLATIONFixing straps for easy and quick installation on all types of bikes with rear seat, such as mountain bike, road bike, etc. MULTIPLE FUNCTIONSWith carrying handle and adjustable shoulder strap The bag can also be used as a handbag and shoulder bag. GOOD PROTECTIONThe elastic band at the top of the bag can help keep your water bottle, clothes or cards on the bag securely. High quality polyester material construction with firm structure and cotton spatula offers your items full protection. Double zipper, convenient to take out your items.