【Soft Material】YunTuo side shields are made of flexible softness TPU, which is friendly to humans, comfort cushions allow custom facial. They will provide the softest care for your eyes., 【Good Protection】Safety glasses side shields protect your eyes from wind and blown particulates, minimizes injuries from wind blown particulates. Suitable for wearing outdoors and science experiments, don't obstruct your vision., 【Easy to Install】Safety glasses no parts or tools required for installation, easy on and easy off from the glasses temple., 【Fits Most Glasses】Universal glasses side shields that fit small to large eyeglasses bracket width is less than 12 mm., 【Attention】Each pair safety glasses side shield has the signs "R" and "L", please pay attention to it.