Reflective band to improve visibility at night and in dark places. This is a diagonal strap type. It's light, so I think you can use it for walks or jogging without any burden. When the light moves, car drivers pay a lot of attention, so I think it will be a source of peace of mind for yourself and your family. ^_^ I opened one to take pictures. - Product Name: Reflective Band - Function: Improved visibility in the dark - Color: Yellow and Gray - Material: Reflective material and fabric Thank you for looking.