Radians
Memphis PPE house with its own eyewear, hearing and glove lines sitting beside licensed DEWALT and Ducks Unlimited shelves — and two of its own about pages giving two different ages and no founding year.
Ergodyne
The St. Paul outfit that started with one back support in 1983, named its own category — Tenacious Work Gear — and has answered to Klein Tools since 2018.
Ergodyne was founded in 1983 by Dr. Thomas W. Votel around a single product, the first industrial back support, and grew into ten named gear families covering gloves, eye and head protection, hi-vis, cooling, warming and tool tethering — a range it branded Tenacious Work Gear. Since September 2018 it has been part of Klein Tools, acquired as Tenacious Holdings and kept running as its own St. Paul business unit. The catalog is wide and the branding is loud; the certifiable parts live on individual model spec sheets, and that is where this page keeps pointing.
- 1983Founded in St. Paul around the first industrial back support
- 2018Klein Tools acquires parent Tenacious Holdings; Ergodyne stays a separate unit
- 10Named gear families, from Squids and Skullerz to Chill-Its and N-Ferno
What we'd reach for
- Squids tool lanyardsThe tool-tethering family — lanyards, holsters and attachment points for dropped-object prevention, the line that earns this page its Tool Tethering chip. Weight ratings are per lanyard model.
- ProFlex gloves and supportsThe hand-protection family, where cut resistance is claimed per glove model under ANSI/ISEA 105 — the level belongs to the SKU, never the brand.
- Chill-Its cooling gearEvaporative towels, cooling bands and hydration accessories — heat stress is the unregulated half of jobsite safety, and this is the line built for it.
In 1983, an emergency physician named Dr. Thomas W. Votel built the first industrial back support, and Ergodyne’s own timeline says what happened next: with it, “Ergodyne pioneers the ergonomics category.” The claim to have invented one’s category is a bold one, but the instinct it reveals is the company’s whole personality — Ergodyne does not enter categories, it names them.
Ten names for the work
From that “one humble product,” as their history puts it, came “an expanded universe of solutions with the introduction of the Tenacious Work Gear line” — ten named families, each holding a shelf: ProFlex (gloves, knee pads, supports), Skullerz (eye and head protection), GloWear (hi-vis apparel), Squids (tool tethering), Arsenal (bags and gear storage), Chill-Its (cooling), N-Ferno (warming), KREW’D (skin protection), SHAX (work shelters) and TREX (traction).
That list is why this page carries five category chips, and each is earned by a family, not a flagship: gloves, eyewear and head protection, hi-vis and thermal apparel, and tethering.
Squids, and the falling-hammer problem
The most consequential line is the least glamorous. Squids is the dropped-object family — tool lanyards, wristbands, holsters and topped-off buckets — for the jobsite arithmetic where a wrench from height is a fatality, not a dent. It is one of the few accessory categories where an “accessory” brand carries real engineering responsibility, and the discipline is the same as everywhere else on this site: the working load limit belongs to the specific lanyard model. FallTech works the same dropped-objects territory from the fall-protection side; that both exist tells you the category has become a compliance line, not a convenience one.
Ratings live on the SKU
Ergodyne’s certifiable claims are per model, and should be read that way. Cut resistance on ProFlex gloves is claimed under ANSI/ISEA 105, level by glove; hi-vis class under ANSI/ISEA 107, garment by garment; eye and head protection under Z87.1 and Z89.1, model by model. The standards documents themselves are paywalled — nobody quoting them at you for free is quoting the text, including us. What a buyer can check is the manufacturer’s stated compliance on the exact SKU, so check exactly that.
The Klein years
On September 5, 2018, Klein Tools acquired Tenacious Holdings, Inc. — Ergodyne’s parent — and kept the operation intact: same St. Paul, Minnesota headquarters, run as a separate business unit, with Votel staying on as president. Eight years on, that structure has held. It pairs the accessory wall with the tool wall: Klein brings the forged steel, Ergodyne the everything-around-it, against glove-wall rivals like Mechanix Wear.
Where they fall down
The branding outruns the documentation. Ten trademarked families and a trademarked category name is a lot of marketing between a buyer and a spec sheet, and we found no published test-report library of the kind FallTech maintains. The claims may all hold; the point is you are taking the SKU listing’s word for it.
Comfort claims are not certifications. Cooling towels, back supports and warming gear do real work, but “ergonomic” has no ANSI number. The certifiable slice of this catalog is narrower than the catalog.
Category naming cuts both ways. Calling the shelf Tenacious Work Gear made a commodity wall ownable — and means the brand’s language always sounds one notch more official than the underlying claim.
On the documented record: a genuinely deep accessory wall with one load-bearing line at its center, best bought one spec sheet at a time.
More in Work at height
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Black Diamond
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Gateway Safety
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Mammut
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