1.Ultrasonic precision edging.Precise and generous spot welding,
not easy to fall off
2.Invisible plastic soft nose clip.Fits softly and comfortably
adjusts for best protection
3.High elastic hypoallergenic ear strap.Soft elasticity wears for a
long time
4.Three-layer folding breathing space.Wear more snugly and retain a
comfortable space
5.Skin-friendly.No odor, new materials, more at ease
6.The interior is clean and sanitary without foreign
objects.High-quality raw materials, sterile and dust-free hygienic
production