Product Material: SBR Size: 57 * 31 cm Buckle adjustment range: 70-160 cm Cell phone pocket can accept size: cell phone within 8 inches Colour: Black Quantity: 1 piece Package content: 1 piece * Running vest bag 1. 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 wristbands and hip pockets, this running vest offers you the lightest and most relaxing running experience. 2. Balanced That running with uneven weight distribution leads to injuries. In the running vest, there is now the ability to distribute the things you need evenly across your upper body to ensure an optimal balance that does not hinder your progress or change your technique. 3. User-friendly design Because performance is paramount, we only use smart, lightweight materials to create a product that fits your upper body comfortably and won't hold you back. Our main focus is on keeping disruptions to any functional movement 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 that is 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 interfering with your training The running vest is also equipped with a small partition in the cell phone pouch, in which you can store cards and cash. The two additional pockets are on either side so you can conveniently store your keys and other smaller items.