Weight: 24g. Materials: High-strength lenses (PC). Flexible arms (PC/TPR). Anti-slip soft nose pad (TPR). Anti-scratch. Anti-fog. Impact protection. Lens standards: EN 170:2001(Transparent), EN 172:2001(Black). Lens marking: 2C-1.2 1FT KN CE(Transparent), 5-3.1 1FT KN CE (Black). Frame marking:EN 166 FT CE