1.. Material Size: Made from polyester material that is waterproof and heat preserving, easy to clean and sturdy. This Bike Rear Seat Bag measures 34cmx14cmx19cm/13.39inchx5.51inchx7.48inch in size. 2.. Convenient and Safe: Equipped with multiple buckle designs for easy access. It also includes a light hanging design for night travel and reflective spots on the body of the bag to enhance visibility while riding. 3.. Versatile and : This Bike Rear Rack Bag is great for mountain biking, cycling, and traveling. It a large capacity with multiple pockets to meet various storage needs. The Bike Bags for Bicycle Rear Rack can be carried by hand, worn on the shoulder, or mounted on the bike for convenience. 4.. Stable Mounting: The four point positioning system ensures that the Bicycle Trunk Pannier Bag stays stable during your ride without any shaking or wobbling. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store