Verres correcteurs pour masque HOLLIS M3
The visibility of HOLLIS M1 diving mask is exceptional. This mask whose skirt is made of 100% silicone, has a single glass made by Saint-Gobain, the "Crystal-Clear".
This glass is designed with a low iron content that gives this dive mask a superior light transmission and reduces the green tint inherent in other glasses.
This reduces distortion and improves colors and visibility in dark conditions.
The HOLLIS M1 mask also has a small internal volume.