3 Pieces Soft Silicone MaterialThese silicone glasses straps are made of environmentally friendly silicone. The glasses strap is odorless, non-toxic, soft and safe, never soaked in sweat, effectively preventing the growth of bacteria. AdjustableThe glasses come with an adjustable buckle and a small buckle to adjust the strap to the shape of your head. Because it is elastic, it keeps your head neither tight nor loose and is easy to put on and take off quickly. Wide Range of Uses55 cm (length) glasses strap holder, suitable for most people. The glasses straps are elastic at the ends and fit most standard sizes of sunglasses, goggles, reading glasses, anti-fog glasses and sports glasses (approx. 0.45-0.75 cm / 0.18-0.3 inches wide at the temples). EyeglassesThese glasses straps are ideal for preventing your glasses from slipping when you work. Wear silicone glasses straps when you exercise, do housework, etc., without worrying about the glasses slipping, falling or being knocked over. Pay more attention to your work. Comfortable, Durable and PracticalGlasses with holders are a good way to secure glasses, and it is also the first choice for those who cannot wear metal-framed glasses for a long time. These silicone glasses accessories are connected with environmentally friendly silicone, which is very ear-friendly, comfortable, lightweight and durable. Please note: 1. Due to manual measurement, please allow a slight error. Make sure you don't mind before you bid. 2. Please understand that the color may vary depending on the screen. Note: Hello, please pay attention to your delivery address when purchasing products. If your receipt information (e.g. name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly.