Cressi F Dual Single-lens mask featuring a unique assembly of lens and skirt without a frame. Cressi’s F-Dual Mask Design Bonds a High-Grade Silicone Double Feathered Edge Skirt directlyto a Single Tempered Glass Lens for the Ultimate in Simplicity. Colorful Frameless technology. The silicone facial is assembled directly on the glass without the need for a frame. This systemguarantees good visibility in all directions. The Low Internal Volume allows for effortless clearing and the Quick-Adjust Strap Buckles are molded directly into the Skirt for a Flexible Fit and Reduced Drag. The Cressi F-Dual Mask has a Wide Split Mask Strap Design for Comfort and to give Even-Tension on the Skirt for a Proper Seal. Features: - Frameless technology for maximum comfort - Single tempered glass lens - Wide field of view - High-grade soft silicone - Double feathered edge skirt - Quick-adjustable strap buckles - Easy-access nose pocket for 1-handed ear equalization Video: https://www. youtube. com/watch?v=Sx93LOnwTA0