Cressi F1 Frameless Mask, ClearFrameless Masks are loved by many divers for their Low Profile and ability to Fold Flat for easy carrying, even in a BCD Pocket. Cressi's F1 mask design bonds a High Grade Silicone Double Feathered Edge Skirt directly to a Single Tempered Glass Lens for the Ultimate in Simplicity. 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 Easy