1. silicone protective cover for the mask, wear- and dirt-, to protect the contact of the face of the flight glasses from sweat/oil/cosmetic erosion. 2. soft silicone, oil 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 2 Colour:grey Material:Silica gel Size:18 x 9.5 x 4cm Package Contents: 1 x Flight glasses mask pad Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.