1. Personalized sweat guide groove, diversion on both sides, to prevent forehead sweat from affecting the line of sight.
2. The anti-closure technology can effectively counter the overlap of the sweat guide grooves and improve the sweat guide effect.
3. Adjustable elastic band, comfortable fit, convenient and smooth to wear, not easy to get stuck.
4. Lengthen the closed sweat guide groove so that the sweat can flow out from both sides of the ear base.
5. Compared with the first generation, the performance of the second-generation sweat guide belt is increased by about 4%, so that perspiration is better.