color straps to make you look more fashionable.Beltcan slide along the strap to adjust the length, so the glasses strap can fit any head shape. The huge elasticity of the material also makes the length of the strap adjustable.Prevent glasses from slipping off: The non-slip glasses chain lanyard can tightly fix the glasses to losing or breaking the glasses during sports or cycling, hiking, skiing and other sports. To some extent, they can help you save money, and you don't have to worry about buying expensive glasses because they are dropped or damaged.Adjustable design: The eyeglass chain is made of high-quality polyester and silicone anti-skid buckle. The buckleThe package includes: You will get a pair of glasses with different colors. Each is about 66cm long5 kinds of different colors: Our glasses lanyards include yellow, sky blue, green, red and black and other different colors, allowing you to match different clothes with differentSuitable for: It can be used for all types of glasses, such as sunglasses, swimming goggles, sports glasses, and reading glasses. Suitable for men, women and children.