This is the IST Syklops Scuba Diving Mask Single Lens Aluminum Mask Features: Single-lens aluminium mask Great field of vision with its wide lens design Super clear, tempered glass lens Supple hypoallergenic liquid silicone skirt 6000 series marine grade aluminium frame Buckles are mounted directly onto the skirt Mask can be stored in a very compact manner Syklops is a single-lens aluminium mask that gives the divers or snorkelers a great field of vision with its wide lens design. The super clear, tempered glass lens and the supple hypoallergenic liquid silicone skirt are held together in the 6000 series marine grade aluminium frame. The buckles are mounted directly onto the skirt instead of the frame, so the mask can be stored in a very compact manner for (tech) redundancy or travelling purpose.