
This men’s 11” waterproof composite toe D3O® internal metguard boot provides protection with the agility you need. Fortified with a D3O internal metguard and a carbon composite safety toe cap for a lightweight feel, this boot is also equipped with our waterproof SCUBALINER™ to help keep you dry in wet conditions. Key Features of the Carolina CA8537 Carbon Composite Safety Toe Cap — A carbon fiber weave cuts toe-cap weight while meeting ASTM F2413 for impact (I/75) and compression (C/75). Winged D3O® Internal MetGuard — Meets ASTM F2413 Class Mt75. A rate-sensitive polymer that flexes as you walk and stiffens on impact. Wide Square Toe — Room across the forefoot. Brown Crazy Horse Leather Upper — Rugged, rich full-grain leather. Waterproof SCUBALINER™ — Carolina's sealed proprietary waterproof lining system. Mesh Lining — Breathable against the foot. Removable Double Tuff Polyurethane Footbed & EVA Midsole — Cushioned support underfoot. Non-Metallic Shank — Composite support with no steel in it. Electrical Hazard Rated — Tested to withstand up to 18,000 volts at 60Hz for one minute without leakage. Welt Construction — Stitched, not bonded; fully resoleable. Slip-Resisting Rubber Outsole — Traction on wet and oily ground. How D3O® Works D3O® is rate-sensitive. Its molecules flow freely at walking speed, so the guard bends with your foot and you forget it's there. On impact they lock together and the material goes rigid, absorbing and spreading the force. It's the same principle behind motorcycle and military body armour, and it's why a D3O guard can be low-profile and soft without giving up the Mt75 rating. What a Metatarsal Guard Actually Protects A safety toe covers the toes and nothing else. The metatarsals — the long bones running from your toes back toward the ankle — sit exposed under thin leather on an ordinary boot. A dropped die, a rolled pipe, or a load slipping off a forklift lands there. An Mt75 guard is rated to absorb a 75-pound-force impact across that
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