Date First Available: 17 Aug. 2023 ASIN: B0CFXBPPRJ Swipe anti-fog technology extends the life of your glasses Activate the revolutionary Swipe anti-fog protective film 70 percent polycarbonate, 20 percent silicone, 10 percent thermoplastic elastomers spectacles Model number 2507 Note- The glasses are one size fits all and can be adjusted to the user"s needs. The product with dark lenses is particularly recommended for outdoor swimming