High Visibility Product: This vest is made with 3M which is a highly reflective material. This vest offers excellent visibility day and night and gives you more security when you move. Perfectly adjustable: This vest has been made with elastic, flexible and resistant bands that can be adjusted with tightening buckles. So any other item of clothing can be worn under the vest, even a thick winter coat. Great versatility: this vest is comfortable and does not hinder your movements. It can be used for any outdoor activity such as jogging, running, cycling and walking. Lightweight and portable: this vest is lightweight and you can easily carry or store it anywhere . Waist circumference: 84-140cm