I found an easy fix to keep them from slipping off my arms
I'm using one of these in conjunction with the iWalk knee crutch, which has turned out to be the perfect combination for me! They feel like they are very solid construction, with adjustments for both the lower leg and the upper arm. The only issue I had with these forearm crutches is that they would slip off my arms because the cuffs are a little too big for me. I tried several ways to push on the cuffs to get them to be smaller, but they always just sprang right back. I like that the cuffs are covered in a sort of rubbery plastic, because that helps them grip a little better. To keep them from slipping off my arms when I let go of the handles, I just wrapped a thick hair band around the ends of the cuffs, and this has worked perfectly. It's not so tight that it digs into my arms, but has just enough resistance to keep the crutch from falling. I happened to have the hair bands on hand, but you can get them at just about any type of drug store - they are near the hair brushes and combs. I also really like the little threaded metal bands that tighten the outer tube against the inner tube, and this makes the crutch completely noise free. I also added a little WD-40 to the bolts that attach the cuffs to the poles, and this made them move a lot easier with my arm movements.
Rating: 5 stars