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Guardian Fall Protection 37100 Series 3 Full Body Harness (X-Small/Small) — Dorsal D-Ring Fall Arrest Harness
$59.99
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EDITORIAL REVIEW: 4.5/5 WC Safety Review — Guardian Fall Protection 37100 Series 3 Full Body Harness, X-Small/Small Editorial assessment by the WC Safety Editorial Team, based on published Guardian Fall Protection...
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EDITORIAL REVIEW: 4.5/5 WC Safety Review — Guardian Fall Protection 37100 Series 3 Full Body Harness, X-Small/Small
Editorial assessment by the WC Safety Editorial Team, based on published Guardian Fall Protection specifications and category fit. We did not laboratory-test this product.
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Guardian Fall Protection 37100 Series 3 Full Body Harness (X-Small/Small) — Dorsal D-Ring Fall Arrest Harness Overview
The Guardian Fall Protection 37100 Series 3 Full Body Harness is the X-Small/Small size in the Series 3 lineup, built for smaller-frame workers who need a properly snug, safe fit that a one-size universal harness can't deliver. A harness that's too large rides up, loads the wrong points, and undermines fall arrest — sizing down to the 37100 is the point of this SKU.
This harness is the wearer-side component of a fall protection system. On its own it does not arrest a fall: under OSHA 1926.502 and ANSI Z359, a complete personal fall arrest system is a full body harness (a body belt is never acceptable for fall arrest) connected by a shock-absorbing lanyard or a self-retracting lifeline to a compliant anchorage. The connecting subsystem attaches to the harness dorsal D-ring between the shoulder blades, which keeps the worker upright after a fall and routes arrest forces through the strongest part of the body.
Within the Series 3 family, the 37100 covers X-Small/Small, the full body harness sibling 37101 covers Medium/Large, and the 37102 covers X-Large/2X-Large — pick by the worker's actual frame. Verify the exact D-ring layout, capacity range, and ANSI Z359 conformance against the manufacturer label before each use. Like every fall-arrest component, this harness must be inspected before every use and permanently retired the moment it has arrested a fall or shows damage.
What It Is Built For
| Use case | Fit | Buyer guidance |
|---|---|---|
| Outfitting a smaller-frame worker for fall arrest | Ideal | The XS/S sizing is the whole reason to choose the 37100 over a universal harness — a snug fit is required for safe arrest. |
| General construction, roofing, or elevated work needing a PFAS harness | Strong | Pair the dorsal D-ring with a shock-absorbing lanyard or SRL and a compliant anchorage to complete the system. |
| Fitting a medium or large worker | Not suitable | Order the 37101 (Medium/Large) or 37102 (X-Large/2X-Large) instead so the harness fits the wearer correctly. |
| Standalone fall protection with no other gear | Not suitable | A harness alone does not arrest a fall — add a lanyard or self-retracting lifeline and an anchor point. |
| Replacing a harness that already arrested a fall | Required action | Any harness that has taken a fall must be retired permanently; a new unit like the 37100 is the correct replacement when the worker is XS/S sized. |
Fall protection is life-safety equipment. A personal fall arrest system must limit free fall and arrest forces under OSHA 1926.502 / 1910.140 and ANSI Z359: use a full-body harness (never a body belt for fall arrest) with a compatible shock-absorbing lanyard or self-retracting lifeline and an anchorage rated 5,000 lb per worker (or engineered to a 2:1 safety factor). Inspect every component before each use, immediately retire anything that has arrested a fall or shows damage, and work to a documented rescue plan. Browse fall protection and full-body harnesses.
Pros & Cons
Pros
- Sized X-Small/Small for a safe, snug fit on smaller-frame workers who can't size into a universal harness
- Dorsal (back) D-ring positions the worker upright during fall arrest per standard PFAS practice
- Part of a clear Series 3 size ladder (37100 XS/S, 37101 M/L, 37102 XL/2XL) for easy crew sizing
- Backed by Guardian Fall Protection, a long-standing fall-protection brand
- Functions as the harness component of an OSHA 1926.502 / ANSI Z359-style personal fall arrest system
Cons
- Harness only — a shock-absorbing lanyard or self-retracting lifeline and a compliant anchorage are sold separately and required
- XS/S sizing fits only smaller frames; medium and larger workers need the 37101 or 37102
- Exact D-ring count, capacity range, and ANSI Z359 conformance must be confirmed on the label, not assumed
- Must be permanently retired after any fall arrest or visible damage
How It Compares
All three Series 3 harnesses share the same design and differ only by fit — choose by the worker's frame. The 37100 (this page) is the smallest cut, X-Small/Small. The 37101 covers Medium/Large, and the 37102 covers X-Large/2X-Large. If you want a lower-cost option outside the Series 3 line, the Guardian 1704 Velocity Economy harness is an alternative full body harness, but for a true XS/S fit the 37100 is the correct pick. Whichever you choose, the harness is only the wearer side of the system — add a lanyard or self-retracting lifeline and a compliant anchor to complete it. Confirm each model's D-ring layout and capacity range on its label before use.
| Model | Size | Best for |
|---|---|---|
| 37100 (this page) | X-Small/Small | Smaller-frame workers |
| 37101 | Medium/Large | Average to larger frames |
| 37102 | X-Large/2X-Large | Largest frames |
| 1704 Velocity Economy | (separate line) | Budget alternative outside Series 3 |
Specifications
| Brand | Guardian Fall Protection |
| Model | 37100 (Series 3) |
| Product Type | Full body harness |
| Size | X-Small/Small |
| Attachment Point | Dorsal (back) D-ring |
| System Role | Body-wear component of a personal fall arrest system (PFAS) |
| Standards Framework | Used within OSHA 1926.502 / ANSI Z359 fall arrest systems (verify conformance on label) |
Related Resources
fall protection full body harnesses lanyards self retracting lifelines
Frequently Asked Questions
What size worker is the Guardian 37100 Series 3 harness for?
The 37100 is the X-Small/Small build of the Series 3 full body harness, sized for smaller-frame workers. For medium and larger frames, choose the 37101 (Medium/Large) or 37102 (X-Large/2X-Large) from the same full body harnesses line.
Does the 37100 harness include a lanyard or lifeline?
No. This is the harness only. To build a compliant personal fall arrest system you also need a shock-absorbing lanyard or a self-retracting lifeline, plus a compliant anchorage. Add a lanyard or self-retracting lifeline separately.
Where does the fall arrest connection attach on this harness?
To the dorsal (back) D-ring positioned between the shoulder blades. That attachment point keeps the worker upright during a fall and routes arrest forces through the strongest part of the body. Confirm the full D-ring configuration on the product label before use.
Is a full body harness required, or can I use a body belt?
OSHA 1926.502 and ANSI Z359 require a full body harness for fall arrest. Body belts are not acceptable for arresting a fall. The 37100 is a full body harness, so it meets that requirement as the wearer-side component of the system.
What weight capacity does the 37100 support?
We don't list a capacity figure we can't verify from the manufacturer label. Check the capacity range printed on the harness label or the product details before deploying it, and make sure the worker plus tools fall within that range. We won't quote a number we can't confirm.
Is this harness OSHA compliant?
A harness is used within an OSHA-compliant personal fall arrest system; OSHA does not 'certify' individual products. The 37100 serves as the full body harness component when paired with a compliant lanyard or self-retracting lifeline and anchorage. Verify the ANSI Z359 conformance on the label.
How is the 37100 different from the 37101 and 37102?
They are the same Series 3 harness in different sizes. The 37100 is X-Small/Small, the 37101 is Medium/Large, and the 37102 is X-Large/2X-Large. Order by the worker's frame from the full body harnesses collection.
Can a larger worker use the 37100?
No — XS/S sizing is meant to fit smaller frames snugly. A harness that's too small won't fit safely. Larger workers should order the 37101 or 37102 instead.
Do I have to replace the harness after a fall?
Yes. Any harness that has arrested a fall must be permanently removed from service, along with the lanyard or self-retracting lifeline involved. Retire it and replace it; never return a fall-arrested harness to use.
How often should this harness be inspected?
Inspect the harness before every use for cut, frayed, or burned webbing, distorted or corroded hardware, and deployed fall-arrest indicators, plus a documented competent-person inspection on a regular schedule per your fall protection program.
What anchorage do I need with this harness?
The lanyard or self-retracting lifeline connects from the harness dorsal D-ring to an anchorage that meets the strength requirements of OSHA 1926.502 / ANSI Z359 for your system. Confirm your anchor point is rated and installed correctly before connecting.
What's the difference between using a lanyard and an SRL with this harness?
Both connect to the dorsal D-ring. A shock-absorbing lanyard is a fixed-length energy absorber, while a self-retracting lifeline pays out and locks like a seatbelt to limit free-fall distance. Choose based on your work height and anchor position from the lanyards or self-retracting lifelines collections.
Written by Steven Eaton, WC Safety Editorial. Specifications sourced from Guardian Fall Protection published data. Compare the range in full-body harnesses.
WC Safety is an independent PPE retailer and Amazon Associate; no paid placement. Match the product to your specific hazard and follow your site PPE program.
Brand / Vendor
Guardian Fall Protection
Model / SKU
37100
Product Type
Full Body Harnesses
Price
$59.99 (Amazon)
Rating
5.0 / 5 — 3 reviews
Availability
Check current availability on Amazon
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Verified Buyer Reviews
Customer Reviews
★★★★☆4.5 / 5· 23 ratings on Amazon
★★★★★
Just what I needed
I had a bunch of roof work that needed to be done, and I was deathly scared of getting on the roof. I purchased some roof anchors, some rope/lanyard and this harness. And all my paranoia and fear of being on the roof disappeared.I replaced shingles, fixed the roof, repaired the gutters, tuck-pointed my chimney and painted my vent stack. I literally saved $1000s doing this myself. I couldn't have done it without the security of this harness.
Verified Purchaser · May 23, 20 · ✓ Amazon Verified Purchase
★★★★★
Comfortable!!!
Comfortable enough to wear for a while without it being a pain. Adjustments are easy to figure out and it feels really well built. When it comes to safety gear I don’t mess around and this one feels legit
Verified Purchaser · March 14, · ✓ Amazon Verified Purchase
★★★★★
Great quality and value
Great quality, straps even fit my legs with my insulated overalls on. Great price for this, very comfortable. The leg straps are a bit noisy but they look like some silence tape would shut them right up
Verified Purchaser · November 1 · ✓ Amazon Verified Purchase
Showing 3 of 23 Amazon reviews.
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