A tightly fitting shell around the polycarbonate lenses provides excellent impact protection around the eyes Revolutionary combined hard and soft handles for improved comfort The special nanostud and the frame provide the glasses with a soft fit to your face and a good grip Tight-fitting, undivided double-curve lenses offer great visibility Sightgard coating: Popular anti-sweat and anti-fog coating with good anti-scratch performance TuffStuff coating: Excellent anti-scratch coating meeting EN166 "K" standard.