--Transparent lens: light weight, stable, good gloss, anti-friction, anti-impact, anti-ultraviolet;

--TPU frame: durable, high toughness, not easy to break;

--Ventilation holes: increase the flow of the internal space, ensure air circulation;

--Sponge: environmentally friendly soft high-density sponge, good elasticity, comfortable to wear, no pressure;

--Elastic band: can be adjusted freely according to needs, long-term wearing without pressure, ensuring comfortable wearing.