Scuba Choice Black Spearfishing Free Dive Ultra Low Volume Comfort Fit Silicone Dive Mask Complimentary 15ml Defog Spray included, assorted colors Extremely comfort fit on the face Ultra low volume weight only 5oz The main feature of this mask is the field of vision which is almost completely non-impaired. The field of vision is 30% higher than other classic dive mask. This makes for much more comfortable spearfishing particularly ad depth. The mask skirt features some milled surfaces that prevent the refraction of sunlight The finish of the skirt which has a carbon fiber appearance was designed specifically to avoid glare