1. Prevent non-oil particles and the filtering efficiency exceeds 95%;
2. The nose clip is made of high-strength plastic composite metal, and its bending resistance capacity is enhanced significantly compared with
the metal nose clip;
3. The advanced sealing material is used for the nose pad, characterized by high fitness, softness and comfort; it can relieve the pressure on
the nose bridge and make you feel more comfortable;
4. The elastic headband can help to relieve the pressure from the head; and it is suitable for long hours of use;
5. The big size offers much breathing space inside, more comfort.