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As its name implies this is an oversize single lens mask, but with an unusually low volume. The lens is angled towards your face for a dramatically increased range of vision, both peripheral and straight ahead. The mask also allows lots of ambient light to enter, increasing vision underwater.
The multiple position strap adjuster allows for a correct, snug fit on medium and larger faces, maintaining its seal even on faces with moustaches. Tempered glass lens is super-clear, and IST’s renowned, high quality skirt and strap provide the ultimate in comfort.