This is the Rob Allen Cubera Mask Ultra-Low Volume Freediving Spearfishing Features: The low volume design ensures you have to equalise the mask as little as possible enabling you to maximise your air retention contributing to longer dive times. It also reduces direct eye contact with the fish which is often contributed to scaring them away. Designed to fit most face shapes. The new Rob Allen Cubera mask comes with a flash tinted lens to shield your eyes against harmful UV rays and offer an HD view of the underwater world. Offers low volume with a soft hypo allergenic silicon skirt and textured around nose for ease of equalization.