Poseidon's exclusive, ultralight, two-lens mask features low volume to fit most faces, strong and easily adjustable side buckles that swivel 45 degrees and a robust frame with optical lenses. Additional optical lenses are available from -1.5 to -9.0. Truly our most versatile mask. COLORS: Black, Black/Kevlar, Black/Red SIZE: 120 mm skirt width, 145 mm lens width MATERIALS: Ultra-light Polymer, Tempered Glass, Silicone WEIGHT: 185 g Mask Bag Included!