Reflective Cross Belt Vest | Highly Reflective with Adjustable Straps | Made with 3M Scotchlite High Visibility: made using 3M Scotchlite reflective material and high visibility elastic bands, the vest offers excellent visibility day and night, keeping you safe from vehicles whilst exercising. Fully Adjustable for a Perfect Fit: made with soft and durable elastic bands, which can be adjusted using the buckles to fit nearly anyone. It can be worn over any clothing, from T-shirts to thick winter jackets. Highly versatile: fits comfortably and does not restrict your movements. It is suitable for any outdoor activities from running, jogging, to cycling and walking. Lightweight and Portable: the vest is lightweight and compact enough to carry and store anywhere. Sizing: waist circumference of adult’s size: 33 - 51 inches.