1.Aniti-fog ,Anti-scratch Double PC len 2.Good adjustable system 3.Faster release ... : silver coating, spherical double lens, permanent anti-fog, Impact and Scratch resistant UV protection*Foam : soft 3 layer* Strap :adjustable DEX ... .silver coating, spherical double lens, permanent anti-fog, Impact and Scratch resistant UV protection.3.Adjustable Strap System4.Square Design5.Air ...