Here is an interesting variation on the "diaper sling" for a rappel harness: I take a length of standard 1 inch tubular webbing such that when doubled I can add fastex type buckels and wear it as a normal belt. In an emergency I can take off the buckels, tie a water knot in it to form a loop, then step into the loop with one leg. This allows me to bring the webbing from my back around both sides to the front and reach between my legs to bring up the webbing around one leg. Attach a carabiner and you have a "diaper sling" minus one leg. I've rappelled like this just fine. I'm not sure how the biometrics would scale, but a little more than twice around the waist works for me.<br><br>Using a carabiner for a buckel would leave you even more prepared. I'd suggest a steel one since life as a belt buckel would incur some abuse.<br><br>