Welcome to my store, Hope you have a pleasant shopping trip!Features:GOOD MATERIALS: This product is made of waterproof wrapped rubber webbing, the webbing can be washed when dirty and used repeatedly, very practical. USB CHARGING: This product uses USB charging, no need to replace the battery, more convenient to use, no need to worry about the battery life. PORTABLE SWITCH: This product comes with a button switch, which can change modes with one key, and three modes can be switched to meet the needs of different situations. APPLICATION: This product has a wide range of uses, not only can be hung on the waist pack, cycling, running can be worn, and a variety of colors, you can choose at your leisure.Specification: Color: Orange, Green, Black, BlueSize: 22cm/8.6inMaterial: Nylon WebbingElectronicPacking List: 2 PCS x LED Flashing Light School Bag 2 PCS x USB data cableNote:1.Please allow 1-2cm measuring deviation due to manual measurement.2.Due to the different monitor and light effect, the actual color of the item might be slight different from the color shown on the pictures. Please Understand, Thanks! GOOD MATERIALS: This product is made of waterproof wrapped rubber webbing, the webbing can be washed when dirty and used repeatedly, very practical. USB CHARGING: This product uses USB charging, no need to replace the battery, more convenient to use, no need to worry about the battery life. PORTABLE SWITCH: This product comes with a button switch, which can change modes with one key, and three modes can be switched to meet the needs of different situations. APPLICATION: This product has a wide range of uses, not only can be hung on the waist pack, cycling, running can be worn, and a variety of colors, you can choose at your leisure. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. GOOD MATERIALS: This product is made of waterproof wrapped rubber webbing, the webbing can be washed when dirty and used repeatedly, very practical. USB CHARGING: This product uses USB charging, no need to replace the battery, more convenient to use, no need to worry about the battery life. PORTABLE SWITCH: This product comes with a button switch, which can change modes with one key, and three modes can be switched to meet the needs of different situations. APPLICATION: This product has a wide range of uses, not only can be hung on the waist pack, cycling, running can be worn, and a variety of colors, you can choose at your leisure. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.