How to use Trango Harness, maintenance and lifespan with instructional pictures.
Prism
Description
The Prism is a well balanced harness, providing a comfortable fit to a wide range of climbers. Featuring floating waist band technology to keep the fit symmetrical no matter the adjustment of the waist band.
- Floating waist band for symmetrical fit at any adjustment level
- Gear loops designed for quick access
Retail price
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Weight (g)![]() ![]() | 288 g |
Fit | Unisex |
Sizes | S, M, L, XL, XXL |
Gear Loops![]() ![]() | 4 Gear loops |
Ice Clip Slots![]() ![]() | No, 0 |
Belay / Tie-In | One Loop |
Waist Buckle Type | Quick Adjust |
Leg Buckle Type | None (it stretches) |
Drop Seat | No |
Haul Loop![]() ![]() | Yes (0kN) |
Certification | |
Size Chart | S (will fit the upper range of XS)
Waist : 69-79 cm / 27-31 in M
Waist : 76-89 cm / 30-34 in L (will fit most XL and the lower range of XXL)
Waist : 86-99 cm / 33-37 in (we converted inches to centimeters) |
No reviews yet.

With that note out of the way, the Trango Prism harness did not disappoint. It’s comfy—the waist belt and leg loops distribute weight well, and, being constructed with a padded mesh lining, they breathe. More importantly, the harness has held up nicely through the four-month season I’ve thus far put it through, which has included outdoor climbing almost every weekend and a few weekday outings as well. This harness has seen some whips! There’s currently only slight wear on the bottom tie-in point, which is totally normal for the mileage.
A pictoral representation of UIAA-105 and EN-12277 standards for harnesses.
The UIAA equipment standard provides a baseline for equipment performance in a test lab under controlled conditions on new equipment. Although these test conditions are relevant to the conditions encountered climbing, conditions encountered at the crags and the condition of the equipment are equally important. This recommendation from the UIAA member federation The British Mountaineering Council (BMC) provides vital equipment information that is NOT explicitly addressed in the standard, particularly failure modes of the equipment and recommendations for the use, inspection, maintenance, and retirement of equipment.