Come and see our amazing products. This shoe clip is made from PVC and PP plastic. One size fits most fitting securely to the back of the shoe. Included two CR2032 batteries. When you go for a jog or by bike at night, use this shoe LED safety lights will have high visibility in the dark to reach safety warning function. The item is sold individually, not as a set. Customize with an imprint of your company name and logo to associate your brand with a safe and healthy lifestyle. Pls confirm further with us if any query about packing info, inventory status and time schedule.