Material: SBRSize: 57 * 31 cmBuckle adjustment range: 70-160 cmMobile phone pocket can accept size: mobile phone within 8 inchesColor: BlackQuantity: 1 piecePackage content: 1 piece * Running vest bag1. Reflective running vest The reflective vest is made of super reflective material. There are large areas of reflective material on the front and back to ensure your safety in the dark. It is very suitable for night running, sports, jogging, fitness, cycling and motorcycling. Compared to armbands and hip pockets, this running vest offers you the lightest and most relaxing running experience.2. Balanced Running with uneven weight distribution leads to injuries. In the running vest, there is now the possibility to distribute the things you need evenly over your upper body to ensure an optimal balance that does not hinder your progress or change your technique.3. User-friendly design Since performance is of utmost importance, we only use smart, lightweight materials to create a product that fits your upper body comfortably and doesn't hold you back. Our main focus is to keep disturbances of all functional movements as low as possible while giving you practical and almost seamless access to the things you need when you need them.4. Practical & Heat dissipation This is a sports vest suitable for both men and women. Complete with an adjustable waistband that allows you to adjust it at any time for maximum comfort, the vest is full of breathable holes that can help dissipate heat and prevent excessive sweating. It is the best choice for sports enthusiasts.5. Carry all important things without disturbing your training The running vest is also equipped with a small divider in the mobile phone pocket, where you can store cards and cash. The two extra pockets are on each side so you can conveniently store your keys and other smaller items.