Plasma is a mask specifically designed for freediving and deep spearfishing. Plasma features an incredibly wide field of vision and extremely reduced internal volume. The geometry of the lenses positions the glass closer to the eyes and guarantees excellent visibility and a low inner volume.. • Mask Skirt made in soft silicone with a variable thickness. - Anatomical adjustable silicone strap • Ultra resistant tempered glass AVAILABLE COLORS : black, white or brown.