Carhartt Rugged Flex 8" Waterproof Met Guard Composite Toe
Good for: Shops that require a met guard. It is a general work boot, not a welding boot.
- Safety toe
- Yes, composite
- Met guard
- Yes, built in
- Heat claim
- Sole, to 572°F
- Spark claim
- None
- Waterproof
- Yes
- Shock protection
- Yes
- Height
- 8 inches
- Widths
- Regular and wide
- Has a met guard, marked MT
- Maker says the sole handles heat up to 572°F
- No spark or welding claim
- The heat claim covers the sole, not the leather
See full specs and sources
Documented specification: Carhartt lists this as style CMF8720, an 8-inch boot with a composite safety toe it describes as lightweight, non-metallic, and non-conductive, plus an internal PORON XRD metatarsal guard. It uses Storm Defender waterproof, breathable protection and a FastDry lining over a lightweight CMEVA midsole, Cushion Comfort PU insoles, and a fiberglass shank. The non-marking rubber lug outsole is described as oil and slip resistant and heat resistant up to 300C/572F. Carhartt states it meets ASTM F2413-24 EH, MT and ASTM F3445-24 SR. The page names no insulation. Medium and wide widths are shown.
Editorial inference: This is the only sourced boot carrying a metatarsal rating, a protection category welding shops may require, and the stated outsole heat resistance is the closest thing in this catalog to a documented heat claim. It is still a general work boot: Carhartt makes no spatter, flame, or welding-specific claim, and outsole heat resistance is not the same as upper spatter resistance. If the shop requires dedicated welding footwear, this does not satisfy that rule.