1. Material: polyester fiber
2. Size: about 7x7.5 cm/piece
3. Weight: about 5g/piece
4. Purpose: monocular correction
5. Features: exquisite stitching process, neat stitching, smooth stitches, slow rebound material, soft and comfortable inside, fits the contour of the face, reduces light penetration, light and breathable, elastic adjustment buckle design, convenient and comfortable to wear