Rubberized retainer has rubber grip tubes that slip onto temples of sunglasses, to keep sunglasses in place and from getting lost. Prevents Loss of Eyewear. Grip Loops at Ends of Strap Attach to Sunglasses Temple Tips. Lighweight Strap is Comfortable To Wear. Durable, Washable, and Fits All Eyewear. Adjustable For Tight or Loose Fit.