● First loosen the straps on both leg loops (if they are adjustable) and then the strap securing the waistbelt.
● Step into the harness. Pay careful attention that the leg loops are not crossing, the belay loop is not twisted and that the waistbelt is not upside down. The belay loop should face the front of the harness.
● Situate the waistbelt slightly above your iliac crest, which is near belly–button level for most people. Having the waistbelt above your hips ensures that you will not accidentally slip out of the harness in the event you fall upside down. Once the waistbelt is situated, tighten it securely.
● You should have no more than a 2–finger gap in slack between your waist and the harness. Make sure that the buckle is doubled back (not necessary if the buckle is an auto double–back model).
● A well–fitted harness should have the ability to adjust to a larger and smaller size equally, allowing the harness to grow or shrink in diameter. A harness that is “maxed out” or at the end of its range of adjustability is not unsafe; however it may be difficult to get in or out of and may limit versatility.
● Adjust the leg loops, 1 at a time. Some harnesses do not have adjustable leg loops and will use a piece of elastic to allow the leg loop to stretch.
● The exact placement of leg loops is less important than the waistbelt; it is based more on comfort. Make sure that the loops allow mobility and do not pinch in a manner that could hurt. I find that placing the leg loops close to the groin and having a 2–finger gap in slack between the loop and my leg works best.
● The tighter your leg loops, the more snug and comfortable you will be while hanging freely, although range of movement can be restricted. Conversely, looser leg loops allow for more mobility and motion but are not as comfortable to dead–hang in. The harness is safe in either case, so ultimately you must make the personal call on comfort.
● Finally, make sure the buckles on each loop are doubled back. You are now ready to test your harness.