A climbing harness is life-safety equipment, and unlike most gear, it has a real, manufacturer- and standards-body-defined expiration — worth understanding precisely rather than judging by how a harness looks or feels.
Two certifications, and what they actually mean
CE certification is the legal requirement to sell climbing equipment in Europe, based on the European standard EN 12277 for harnesses, which specifies a strength test simulating fall forces with a significant safety margin built in. UIAA certification (from the International Climbing and Mountaineering Federation) is voluntary, often involving equally or more rigorous testing, and is widely regarded within the climbing community as a strong, trusted safety signal beyond the legal minimum. A harness carrying either mark has passed real, standardized testing — checking for the UIAA Safety Label or CE mark, engraved or stitched onto the gear or listed in the product instructions, is a genuine verification step, not just a formality.
The 10-year rule applies even to unused gear
Textile equipment — harnesses, ropes, slings — has a hard maximum lifespan of 10 years from the date of manufacture, regardless of how much or how little it's actually been used. A harness that's sat in a closet with tags still attached for a decade needs to be retired at that point just the same as one used regularly, since the materials themselves degrade gradually over time from factors like UV exposure and material aging, independent of use. This is a genuine, real limit set by manufacturers and safety organizations, not an overly conservative suggestion.
Real service life is often much shorter than the 10-year maximum
For a harness in regular, frequent use, actual recommended replacement is commonly cited around every 5 years under normal conditions, and can be shorter — sometimes 1 to 3 years — for very heavy, frequent use. The 10-year figure is a hard outer limit that assumes minimal use; it is not a target lifespan to aim for regardless of how often the harness is actually climbed in.
What forces immediate retirement, regardless of age
A harness should be retired immediately, regardless of how new it is or how much of its theoretical lifespan remains, after any major fall or high-impact event, or if it shows visible signs of wear — frayed or cut webbing, damaged stitching, a stiff or malfunctioning buckle, or noticeable discoloration from UV exposure. When in doubt about a harness's condition, the standard, repeatedly stated guidance across climbing safety organizations is to retire it rather than continue using it — the cost of a new harness is trivial compared to the consequences of a failure.
The one thing people forget
Keep a written record of the harness's purchase date, manufacturer, and any notable incidents (falls, damage) rather than relying on memory to track its age and history. This record is what actually lets a climber make an informed retirement decision years later, rather than guessing at how old a piece of gear is or how much real stress it's been through.