Design of the luminous, our product is safe than the reflective strip at night. And you don't need to install a tail lamp, which is convenient to use. The zipper can prevent daily water spray or splashing from penetrating the inside of the bag effectively because it is waterproof.With a large-capacity design, you can easily summarize your belongings. The built-in net bag can classify items more clearly. The appearance is streamlined design, which can effectively reduce resistance.It is made of polyester and 300D cationic, is durable and solid to use.The length of the product is 15.8 cm, the width is 8.7 cm and the thickness is 10 cm.The bag is suitable for both mountain bikes and road vehicles.Item Name: Bike SaddlebagMaterial: PolyesterFeatures: Ultra-light, Shock-absorbing, Scratch ResistantBattery: 18550 BatteryColor: GreySize Details: 15.8cm x 8.7cm x 10cm/6.22" x 3.43" x 3.94" (Approx.)Notes: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.Package Includes:1 x Bike Saddlebag1 x USB Cable