Has a certain hardness, flexibility, elasticity, wearing resistance, corrosion resistance, light weight, good gloss and color, etc.
UV protection resin lens passed the Drop Ball Test and FDA certification with different colors restored original true colors of the world, increasing clarity and give you a real feeling to the world.
High elastic spring leg can prevent it cliping your face, solid high quality hinge tested 100 thousand times.Smooth but uneasy to fall off.Tight screw, with medical silica gel allergy free and skid resistance nose pads.