This is the Bare Sport Duo C Low Volume Scuba Diving Mask Features: Double Feathered Edge Silicone Skirt Wide Split Strap Design Feathered Edge & Wide Split Strap Combined for Comfortable and Perfect Seal on Face Highest Quality Tempered Safety Glass Lenses One-Hand Easy-to-Reach Nose Pocket for Ear Equalization Superior Field of View Mask is Easy to Clear A classic low volume twin lens design that incorporates a double-flanged silicone skirt for an excellent face seal.