Description: 【Prevent Glasses from Sinking in Water】This floating sunglass strap can prevent glasses from falling off easily, even if dropped, it will float on the water, helping you get your glasses back quickly. 【High Quality Material】This adjustable sunglasses strap is made of high quality durable nylon and foam tube, so it can float on the water to prevent the sunglasses from falling into the water. The silicone tube connected to the temples is very soft and will not damage the temples. 【Size】The total length of the eyewear retainer strap is 68cm/ 26.77 inches, the thickness is 10mm/0.39inch, the inner diameter of the silicone tube is 4mm, and it is suitable for 5-11mm thick temples. 【Easy to Install】The glasses float strap is very easy to install and remove. You simply attach the silicone tubes to the temples and move the adjustable buckle to fit your head. 【Wide Application】Our Outdoor Eyeglass Rope is perfect for boating, kayaking, surfing, water sports, sailing or swimming. This is a great gift for family, friends or yourself. Specification: Material: Nylon Size Chart: Thickness: 1cm/0.39inch Overall length: 68cm/26.77inch Silicone Tube Inner Diameter: 4mm Package Includes: 1 Floating Sunglass Strap(4 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.