M1 stick The design also contributes to

The design also contributes to smoother breathing

Lifting strap with stainless steel D-ring at bottom

Ideal for photographers

both inside and out

M1 stick The design also contributes toThe Hollis M1 mask has proven to be a bestseller over the years in the absolute top class of diving masks. The mask owes its reputation mainly to the lenses made of Saint Gobain glass: ultra transparent, extra clear and with unique optical qualities. Thanks to the low iron content in the glass, the goggles provide a higher light transmission and a reduced green tint, which are typical of traditional diving goggles. This results in minimal color