The Perla Mask is particularly suitable for Free Diving and Snorkeling, but just as appropriate for use in Scuba Diving. The Perla has Two Tempered Glass Lenses with a 100% High Quality Silicone Rubber Double-Feathered Edge Skirt for a great Seal on the Face, and will adapt to most people's faces. The Perla is a Low Volume Mask that is Easy to Clear Due to its Low Volume the Mask sits closer to your eyes Increasing the Masks Field of View Underwater. Mask has a Wide Split Strap to provide even pressure for a great seal on the face with Strong Rapid Action Buckles to Adjust the Strap Quick and Easily. The Perla Mask has an Easy-to-Reach One-Hand Nose Pocket for Ear Equalization which can be utilized even when wearing thick gloves. - Particularly Suitable for Free Diving and Snorkeling - Appropriate for Use in Scuba Diving - Two Tempered Glass Lenses - 100% High Quality Silicone Rubber Skirt - Double-Feathered Edge Skirt for a Great Seal on Face - Mask Adapt to Most People's Faces - Low Volume Mask Design - Easy to Clear Mask - Wide Field of Vision - Wide Split Strap Provide Even Pressure for Great Seal - Strong Rapid Action Buckles, Adjust Strap Quick and Easily - Easy-to-Reach One-Hand Nose Pocket for Ear Equalization Colour Variant : Black, Dark Green, Clear Black, Clear Blue, Clear Pink Recommended use : Snorkeling, Scuba Diving, Acceptable for Recreational Freediving