The Subframe CA5556 is a lightweight 6" composite-toe work boot with a static dissipative (SD) rating and no steel anywhere underfoot.
Key Features of the Carolina CA5556
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Composite Safety Toe Cap — Meets ASTM F2413 for impact (I/75) and compression (C/75), with less cold transfer than steel.
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Electrostatic Dissipative (SD) — Absorbs and neutralizes loose electrons, channeling static charge into the floor. Meets the ASTM F2413 SD requirement.
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Utopia Cafe Leather Upper — Full leather build in a 6" height.
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Mesh Lining — Breathable against the foot.
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EVA Midsole — Lightweight cushioning underfoot.
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Removable Dual-Density EVA Footbed — Memory-foam top layer with an improved heel cup; comes out for orthotics.
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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.
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Oil- & Slip-Resisting Rubber Outsole — Grip on wet floors and loose ground.
SD and EH Are Not the Same Thing — and This Boot Is SD
An electrical hazard (EH) boot insulates you from a live circuit. A static dissipative (SD) boot does the opposite: it conducts static charge off your body and into the floor at a controlled rate. The two are mutually exclusive under ASTM F2413, and the CA5556 is SD.
That makes it right for electronics assembly, cleanrooms, powder handling, fuel and solvent work, and anywhere a static discharge could damage components or ignite vapor. It makes it wrong for work around energized circuits.
No Steel in the Toe or the Arch
Composite toe, composite shank. Neither of the two structural components that are usually steel is steel here, which keeps weight down and reduces cold transfer into the toe box.
Why Choose the CA5556?
Light, composite safety-toe protection with an SD rating — built for static-sensitive floors rather than heavy site work.
Similar Styles to Consider
Need waterproofing with your SD rating? The Bruno Lo CA5522 adds a SCUBALINER™ and a carbon fiber toe. Browse all composite toe boots, or the full Carolina range at Overlook Boots.
Frequently Asked Questions
Is the CA5556 electrical hazard rated?
No. The CA5556 is static dissipative (SD), which is the opposite property. An SD boot is designed to conduct static charge to ground; an EH boot is designed to insulate you from a live circuit. Do not treat this boot as EH protection.
What is an SD boot for?
Environments where a static discharge is the hazard: electronics manufacturing and repair, cleanrooms, powder handling, fuel and solvent work, munitions. The boot bleeds off the charge your body builds up walking across a floor.
Can I replace the footbed with my own orthotic?
The footbed lifts out, but SD footwear needs care here. In an SD-necessary environment, a replacement insole must itself be static-dissipative, and even then the boot may no longer test SD. Verify with your safety officer before swapping it.
Is it waterproof or insulated?
The Subframe is a light, uninsulated three-season boot without a waterproof membrane. For a waterproof SD boot, the Bruno Lo CA5522 carries a sealed SCUBALINER™.
How does cement construction affect the boot?
The sole is bonded directly to the upper rather than stitched through a welt, which keeps the boot light and lets it flex from the first day, with no break-in underfoot.
