Material: Nylon, PolyesterSize: as shownCapacity: 1.6LPackage List1*Bike Water Bottle BagDue to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.11. Waterproof: The outer fabric of the bicycle seat bag is made of nylon waterproof fabric, and is equipped with a waterproof zipper to ensure that water will not flow into the bag. 22. Large space: There are zippers on the left and right sides of the bicycle bag under the seat; the large-capacity pocket can store various tools, and the compartment can place 1 water bottle. Distribute space reasonably to prevent items from being scratched and bumped. 33. Safe: There are reflective coatings on both sides and the back of the bicycle saddlebag. Warning lights can be hung behind the bicycle saddlebag, which effectively reduces the risk of safety accidents during night riding (this product does not contain bicycle lights). 44. Installation: This bicycle saddle bag adopts a three-dimensional design and is fixed with a bracket buckle and an adhesive sticker; after the bracket is fixed, insert the bicycle bag into the buckle and fasten the adhesive sticker to complete the installation; loosen the hook and loop fastener and press the belt Buckle to remove bike bag. 55. Bike seat bottle cage: Suitable for water bottles less than 7.5cm in diameter. Put the water bottle in the bag and adjust the elastic to secure it. The kettle is not included.