A proprietary waterproof, breathable membrane that lets vapour out without letting water in.METATOMICAL FOOTBED DESIGN
This internal support mechanism is anatomically engineered to provide excellent arch support and cradle the natural contours of the foot.KEEN.GRIP
Our oil and slip resistant outsoles meet or exceed ASTM (American Society for Testing and Materials) F1677-96 MARK II non-slip testing standards.LEFT & RIGHT ASYMMETRICAL STEEL TOE
Uniquely anatomically correct steel-toe design provides a roomier toe box and maximum comfort. Meets ASTM F2412-11 and F2413-11 I/75 and C/75 standards.