Our men's 6” waterproof insulated broad toe work boot will help keep you dry, secure and comfortable.
Built on Carolina's broad last with 400 grams of Thinsulate™, a waterproof SCUBALINER™, and the enduring support of a Pillow Cushion™ insole and removable AG7™ footbed.
Key Features of the Carolina CA5021
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Soft Toe — No safety toe cap; a roomy, broad toe box instead.
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Gaucho Crazy Horse Leather Upper — Waxed, pull-up leather that scuffs to a patina rather than scarring.
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Waterproof SCUBALINER™ — Carolina's proprietary waterproof lining system.
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400 Grams of Thinsulate™ Insulation — Traps warmth without absorbing water or adding bulk.
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Removable AG7™ Polyurethane Footbed — Enhanced arch support; comes out if you wear orthotics.
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Pillow Cushion™ Insole & EVA Midsole — Two layers of shock absorption underfoot.
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Electrical Hazard Rated — Tested to withstand up to 18,000 volts at 60Hz for one minute without leakage.
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Non-Metallic Shank — Composite support with no steel in it.
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Cement Construction — A bonded sole that keeps the boot light and flexible underfoot.
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Slip-Resisting Rubber Outsole — Oil- and slip-resisting tread.
How Much Warmth Is 400 Grams?
400g Thinsulate™ is a cold-weather weight — right for sustained outdoor work below freezing, or standing still in the cold. If you're moving hard or working indoors, Carolina builds the same broad-last Bruno at lighter weights.
Broad Toe Box
Carolina calls the Bruno a “broad” last, and that's the point of it: extra volume across the forefoot for feet that swell across a shift, or for anyone who cramps up in a standard-width toe.
Why Choose the CA5021?
Waterproof, seriously insulated, and light on the foot — for cold, wet work where nothing is falling on your feet.
Similar Styles to Consider
Need a safety toe? The CA5521 is the composite-toe version of this exact boot. For a lighter, uninsulated build, look at the 5" carbon composite CA5522. Browse the full Carolina range at Overlook Boots.
Shop more: Carolina Boots, Soft Toe Work Boots, Carolina Insulated Boots, 400G Insulated Boots
Frequently Asked Questions
Is the CA5021 true to size?
Carolina generally runs true to size — order your sneaker size. The Bruno is built on a broad last with a roomy toe box, so if you're between widths, the standard D is usually enough.
How does cement construction affect the boot?
The sole is bonded directly to the upper rather than stitched through a welt, which keeps an insulated boot light and lets it flex from the first day, with no break-in underfoot.
Does the Bruno Lo CA5021 have a safety toe?
It's a soft-toe boot with no safety toe cap, built with a roomy, broad toe box instead.
Is the CA5021 waterproof and insulated?
Yes. Carolina's SCUBALINER waterproof lining keeps feet dry, and 400 grams of Thinsulate insulation traps warmth without absorbing water or adding bulk.
Is the CA5021 EH rated?
Yes. It's electrical hazard rated, tested to withstand up to 18,000 volts at 60Hz for one minute without leakage.
How does the CA5021 compare with other Bruno Lo boots?
The CA5021 is the soft-toe, insulated 6-inch Bruno Lo. The CA5521 adds a composite safety toe to the insulated 6-inch build, and the CA5522 is a 5-inch waterproof version with a carbon composite toe.
