Composite safety toe - lightweight, non-metallic, and non-conductive to heat or cold. Meets or exceeds ASTM 2413-24 standards. Storm Defender waterproof, breathable protection. 400g 3M Thinsulate insulation to keep you warm in cold environments. Swen-Flex PR plate provides flexible non-metallic protection against sharp objects to the bottom of the foot. Puncture Resistant styles meet ASTM 2413-24 PR standards and CSA Grade 1 standards. Slip Resistance meets or exceeds ASTM F3445-24 standard.