Swimline Thermotech Swim Mask Teardrop Style Thermotech Mask The Kauai Mask is only available in youth sizes and lens Dimension: 5 x 3 This mask ships in assorted colors Minimum Circumference: 10.875 Amount of stretch at minimum circumference: 0.75 Maximum Circumference: 15.75 Amount of stretch at maximum circumference: 1.625