This is a strap for a Skater 480ml plastic water bottle. It's the strap for the Skater 480ml Sumikko Gurashi children's antibacterial plastic water bottle, made in Japan, lightweight, and child-friendly, model PSB5SANAG-A. The original rubber that came with the purchase has not been removed. It has been stored without use. I'm selling it to someone who needs it because I don't use it.