This is the XS Scuba Crew Mask Frameless Scuba Diving Mask Features: Our latest design in frameless masks Super wide vision and low volume Direct bonding of tempered glass to liquid silicone skirt Large, single window lens for unobstructed view Easy-adjust buckles Double, feathered edged sealing surface Includes mask storage box Our frameless Crew mask is low profile giving the diver super wide vision, and a great fit for beginning divers all the way up to instructors.