Large Capacity Multi-Pocket Design This bicycle rear rack bag features a main compartment plus side pockets and a water bottle holder, fitting all your cycling essentials like tools, phones, and snacks. Waterproof Rain Cover Included A free waterproof rain cover is included to shield your belongings from heavy rain, keeping them dry and safe during wet rides. Reflective Strips for Night Safety Bright reflective strips on the bag enhance visibility in low light, reducing risks and ensuring safe night riding. 3-in-1 Multifunctional Use It can be used as a rear rack bag, handbag, or shoulder bag, perfect for cycling, commuting, and short trips. Expandable Top Compartment The top compartment expands to create extra storage space, ideal for carrying extra gear on longer rides. Bicycle Rear Rack Bag; Waterproof Cycling Pannier; Reflective Bike Bag; Large Capacity Bike Trunk; MTB Rear Rack Bag; Road Bike Pannier; Commute Cycling Bag; Travel Bike Storage; Handheld Bike Bag; Shoulder Carry Bike Bag; Waterproof Rain Cover Bag; Expandable Bicycle Bag; Multi-Pocket Bike Bag; Water Bottle Holder Bag; Cycling Luggage Carrier; MTB Saddle Trunk; Road Bike Rear Bag; Outdoor Cycling Bag; Bike Commuter Bag; Cycling Accessories