The Reebok Running Vest is perfect for helping to improve your visibility and getting you seen when out in the dark. Ideal for running, walking and all sports, this hi-viz vest is lightweight and has plenty of room for your to move in. The material allows flexibility with S/M suitable for chest sizes 32" - 40” and L/XL suitable for 37" - 47”. Easy to put on and take off, this high visibility vest is made of breathable material to help keep you cool.