Specifications:Brand: ROCKBROSMaterial: NylonColor: As the picturesWeight: About 550gWaterproof: IPX7Functionality: FoldableFeatures:Quick release system, easy to be fixed with Seatposts.Reflective belt to keep bicycles safe.Pockets inside that you can store tools, camera, pump, helmet, umbrella, clothes and so on.Multi-function, Ultra-large capacity, IPX7 waterproof.Package included:1xWaterproof Bike Saddle Bag