✓ Minimize fogging issues on most people. Glasses wearers friendly, antifog face mask, no fogged glasses. Seeing things again without foggy glasses. ✓ Put your glasses ABOVE the mask, The design makes your breath vents out the sides. _ One size fit all. Unisex. Men, Women, Youth. Fits many different face sizes and shapes. Dimensions: Regular: Length: 9.2 inches/ 23.5 cm Height: 5.9 inches/ 15 cm Large (Big size): Large sizes are good if you do have a larger/rounded head or beards. Length: 10 inches/ 26.5 cm Height: 6.2 inches/ 16 cm