|3M 2720 Spectacles Blue frame with clear lens. The 3M 2720 Series Spectacles are extremely lightweight and comfortable with a sporty, modern design. , Excellent impact resistance. , Optical class 1 for high optical clarity. , Polycarbonate lens provides reliable protection against specified levels of hazardous UV radiation. , Anti-Scratch coating for increased durability and improved vision. , Anti-Fog coating to help reduce lens fogging, particularly during physical work or when wearing half masks. , Extremely light-weight and comfortable. , Sporty and modern design. , Slim nose bridge and flat temples for improved compatibility. Ideal for combination with Aura 9300+ series respirators. , Tests show that the above combinations are suitable for many wearers. However, compatibility with other personal protective equipment is subject to a number of variables and the user must make an appropriate selection depending on individual requirements.