Lightweight and No Burden-The design of the glasses arm covers are ergonomic and can be better close to the ear. The anti-slip glasses sleeve is light and burden-free, while giving you a more comfortable wearing experience. Waterproof and Sweatproof-This is a very practical eyeglasses legs cover. Putting them on the eyeglass legs can prevent allergies caused by the metal material of some eyeglass frames. At the same time, silicone glasses arm covers are waterproof and sweatproof,preventing sweat from corroding your spectacle frame. Fastening: Pull On Traditional Anti-Slip Design-The reason why the anti-slip glasses hooks grips are made of silica gel is that silica gel can better play a non-slip effect, and the silicone material is soft and more comfortable to wear. The most important thing is that this eyeglasses sleeve retainer can relieve the discomfort of ear pain caused by wearing glasses for a long time while playing a non-slip effect. Safe Material-This eyeglass retainers are made of high-quality silicone, which is safe and environmentally friendly, non-toxic and tasteless, and the skin-friendly silicone can be safely contacted with the human body. The soft silicone material of the glasses ear grips have good elasticity, can be stretched without deformation, is not easy to break, and the eyeglass ear pads are safer and more durable. Suitable for Various Frames-Eye glasses sleeve retainer suitable for various glasses and sunglasses, suitable for outdoor activities such as cycling and running or daily life such as work. The non-slip spectacle arm protector can effectively prevent the glasses from slipping off, and is an ideal helper for glasses wearers in work and life.