CAROLINA. CA7538. PITSTOP 6 INCH INSULATED COMP TOE. GREY. The Carolina Pitstop 6 inch insulated work boot is a comfortable boot that will protect your feet. Featuring 600 grams of Thinsulate to offer outstanding warmth for freezing temperatures. These work boots are engineered to withstand heavy duty industrial environments with material that won t break down when exposed to corrosive chemicals.