material: The bicycle saddle bag is made of polyester material, which is strong and durable, can maintain a good shape without deformation, and better protect the contents inside. EASY TO INSTALL: The bicycle saddle bag does not require any tools and screws. You only need to freely adjust the sticker according to the position of the seat cushion, to ensure the stable installation of the bicycle saddle bag, even in difficult sections, it will not wobble or fall off. Unique Design: The bicycle saddle bag has a streamlined design for long rides. Save space on the bike, clever design, no extra burden on the bike, the best choice for your daily life. LARGE CAPACITY: This bike saddle bag has a lot of space to store your phone, multi-tools, flat tire repair kit, keys, money, gadgets and other items. Very convenient and practical. SAFE DESIGN: This bicycle saddle bag has a reflective strip on the back, which can ensure your safety while driving at night. Greatly improved security. 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.