1. silicone protective cover for the mask, wear-resistant and dirt-resistant, to the contact surface of the face of the flight glasses from sweat/oil/cosmetic erosion.2. soft silicone, surface oil spray treatment, smooth and comfortable touch, experience a different flight journey.3. easy to replace, easy to clean, convenient and hygienic.4. real machine open mold, fit the mask to prevent light leakage, as if the bare machine as comfortable to wear.Applicable models: for Avata Goggles 2Colour:BlackMaterial:Silica Size:18 x 9.5 x 4cmPackage Contents:1 x Flight glasses mask padOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.