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Safewaze FS591 PRO Dual-Leg Low-Profile Shock Absorbing Lanyard — 100% Tie-Off
$94.52
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EDITORIAL REVIEW: 4.6/5 — WC Safety Review of the Safewaze FS591 PRO, a lighter dual-leg 100% tie-off lanyard. Editorial assessment by Steven Eaton, WC Safety editor, based on published Safewaze specifications and c...
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EDITORIAL REVIEW: 4.6/5 — WC Safety Review of the Safewaze FS591 PRO, a lighter dual-leg 100% tie-off lanyard.
Editorial assessment by Steven Eaton, WC Safety editor, based on published Safewaze specifications and category fit. We did not laboratory-test this product.
Editorial assessment by Steven Eaton, WC Safety editor, based on published Safewaze specifications and category fit. We did not laboratory-test this product.
The Safewaze FS591 PRO is a dual-leg (Y-leg) 100% tie-off shock-absorbing lanyard with low-profile internal absorbers on both legs, delivering continuous connection in a lighter, less bulky package than traditional twin-leg lanyards with external pouches. It has a 6-ft length, double-lock snap hooks, and a 130 to 310 lb capacity, meets OSHA 1926.502 and ANSI Z359.13, and is serialized for trackable inspection records.
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Why the Safewaze FS591 lightens 100% tie-off
Twin-leg lanyards keep you connected through anchor transitions, but two external shock pouches add weight and bulk you feel by the end of a shift. The FS591 builds the absorbers flush into both legs — a low-profile dual-leg that delivers true 100% tie-off in a lighter, less bulky package. It keeps Safewaze's double-lock snap hooks needing two deliberate actions to open, holds arrest force under the ANSI Z359.13 900-lb maximum, and every unit is serialized for inspection tracking. It is the twin-leg counterpart to Safewaze's single-leg FS580. As lanyards go, this is the lighter tie-off pick, and the best fall protection lanyards guide and fall protection equipment guide cover how the pieces fit. It stays connected without the bulk.
Safety first: this lanyard is only one component of a complete personal fall arrest system — pair it with a compatible full-body harness at the dorsal D-ring and anchors rated for at least 5,000 lb. The dual legs give continuous connection, but the clearance math still applies to the arresting leg: calculate free fall, the deployed absorber length, D-ring height, and a safety factor. The capacity is 130 to 310 lb and arrest force stays under the ANSI Z359.13 900-lb maximum. Retire the lanyard after any fall. Confirm requirements with the OSHA 1926 fall protection guide.
What the Safewaze FS591 listing documents
From the published specs: a dual-leg (Y-leg) 100% tie-off design; low-profile internal absorbers on both legs; double-lock snap hooks; a 6-ft length; a 1-inch low-profile polyester web; a 130 to 310 lb capacity; an absorber under the ANSI Z359.13 900-lb maximum; serialization; and OSHA 1926.502 / ANSI Z359.13 compliance. These are true dual leg lanyard credentials and a genuine 100% tie-off lanyard — a lighter low-profile lanyard for moving between anchors.
How the Safewaze FS591 compares to other lanyards
For the single-leg low-profile version, the Safewaze FS580; for the external-absorber workhorse, the Safewaze FS560; for other 100% tie-off, the internal FallTech 8259Y or Guardian 11202; for an external-pack dual-leg, the Guardian 01230; and for a premium Y-leg, the Petzl ABSORBICA-Y 80. The safety harness guide pairs the harness.
Building a complete fall arrest system
A lanyard is one of three parts. For the harness, the full-body harnesses collection; for anchors, the anchor points collection and roof anchors guide; for complete sets, the fall protection kits collection and kits guide; and the full fall protection collection, the lanyards and lifelines collection, plus self-retracting lifelines span every category.
Where it fits by job and crew orders
The FS591 suits construction and industrial crews who move between anchors and want lighter 100% tie-off with trackable serials — compare tool-lanyard options in the tool lanyards collection for dropped-object control. Park the unused leg per Safewaze's guidance, keep the weight in range, and retire the lanyard after any fall. For crew orders, quantity purchasing runs through a free Amazon Business account — volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations, with the walkthrough linked in our footer.
Frequently asked questions
What is the Safewaze FS591 PRO?
A dual-leg (Y-leg) 100% tie-off shock-absorbing lanyard from Safewaze's PRO series with low-profile internal absorbers on both legs. It meets OSHA 1926.502 and ANSI Z359.13, with a 6-ft length, double-lock snap hooks, and a 130 to 310 lb capacity.
What is 100% tie-off?
With the dual Y-leg design, one leg stays clipped to the current anchor while you move the other to the next anchor before releasing the first - so you are never disconnected while moving between anchor points.
Why low-profile absorbers on a dual-leg?
Building the absorbers flush into the legs rather than in external pouches makes the twin-leg lanyard lighter and less bulky, reducing snag points on cluttered structure while keeping ANSI Z359.13-compliant absorption.
How does it limit arrest force?
The PRO series energy absorber on the arresting leg limits maximum arresting force to well under the 1,800-lb OSHA limit, meeting ANSI Z359.13's 900-lb maximum for workers up to 310 lb.
What are double-lock snap hooks?
Double-lock snap hooks require two deliberate actions to open, exceeding OSHA 1926.502(d)(2)(vi)'s self-closing, self-locking requirement and reducing the risk of accidental rollout.
What does serialized mean?
Each Safewaze PRO lanyard carries a serial number so you can keep trackable inspection records for it over its service life - useful for a documented fall-protection program.
How is it different from the single-leg FS580?
Both use Safewaze's low-profile internal absorber; the FS580 is single-leg for stationary work, while the FS591 adds a second leg for 100% tie-off when you move between anchors. Choose the FS591 for continuous connection.
What harness and anchor do I need?
Connect the center double-lock snap hook to the dorsal D-ring of a compatible full-body harness and each leg to a certified anchor. The lanyard alone is not a complete system.
How much fall clearance do I need?
Calculate total fall clearance before work: free fall, the deployed absorber length, D-ring height, and a safety factor. The clearance math applies to whichever leg arrests the fall.
Can I clip both legs to one anchor?
Clip only the working leg during normal work; the second leg is for the transition between anchors. Follow Safewaze's instructions on parking the unused leg.
When must it be retired?
Retire the lanyard immediately after it arrests a fall, or if the webbing, stitching, or hardware shows cuts, burns, corrosion, or deformation. Inspect before every use using the serial number.
How do I order for a crew?
Quantity purchasing runs through a free Amazon Business account - volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations. The bulk-ordering walkthrough is linked in our site footer.
Read our detailed Safewaze FS591 PRO Dual-Leg Low-Profile Shock Absorbing Lanyard review — strengths, limitations, and the alternatives that matter.
Brand / Vendor
Safewaze
Model / SKU
FS591
Product Type
Lanyard
Price
$94.52 (Amazon)
Availability
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Frequently Asked Questions
What is the Safewaze FS591 PRO?
A dual-leg (Y-leg) 100% tie-off shock-absorbing lanyard from Safewaze's PRO series with low-profile internal absorbers on both legs. It meets OSHA 1926.502 and ANSI Z359.13, with a 6-ft length, double-lock snap hooks, and a 130 to 310 lb capacity.
What is 100% tie-off?
With the dual Y-leg design, one leg stays clipped to the current anchor while you move the other to the next anchor before releasing the first - so you are never disconnected while moving between anchor points.
Why low-profile absorbers on a dual-leg?
Building the absorbers flush into the legs rather than in external pouches makes the twin-leg lanyard lighter and less bulky, reducing snag points on cluttered structure while keeping ANSI Z359.13-compliant absorption.
How does it limit arrest force?
The PRO series energy absorber on the arresting leg limits maximum arresting force to well under the 1,800-lb OSHA limit, meeting ANSI Z359.13's 900-lb maximum for workers up to 310 lb.
What are double-lock snap hooks?
Double-lock snap hooks require two deliberate actions to open, exceeding OSHA 1926.502(d)(2)(vi)'s self-closing, self-locking requirement and reducing the risk of accidental rollout.
What does serialized mean?
Each Safewaze PRO lanyard carries a serial number so you can keep trackable inspection records for it over its service life - useful for a documented fall-protection program.
How is it different from the single-leg FS580?
Both use Safewaze's low-profile internal absorber; the FS580 is single-leg for stationary work, while the FS591 adds a second leg for 100% tie-off when you move between anchors. Choose the FS591 for continuous connection.
What harness and anchor do I need?
Connect the center double-lock snap hook to the dorsal D-ring of a compatible full-body harness and each leg to a certified anchor. The lanyard alone is not a complete system.
How much fall clearance do I need?
Calculate total fall clearance before work: free fall, the deployed absorber length, D-ring height, and a safety factor. The clearance math applies to whichever leg arrests the fall.
Can I clip both legs to one anchor?
Clip only the working leg during normal work; the second leg is for the transition between anchors. Follow Safewaze's instructions on parking the unused leg.
When must it be retired?
Retire the lanyard immediately after it arrests a fall, or if the webbing, stitching, or hardware shows cuts, burns, corrosion, or deformation. Inspect before every use using the serial number.
How do I order for a crew?
Quantity purchasing runs through a free Amazon Business account - volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations. The bulk-ordering walkthrough is linked in our site footer.