We even tested these on the trampoline and they didnt slide or fall off the kids! I really like these and they are comfortable. I can squat heavier while using this because it prevents the weight from digging into my traps. What I like: 1. Beautiful quality, came really fast, love it! Not sure how well that is explained in description. They wash and wear incredibly well. I may splurge for another pair. Also the ribbon is very awkward, you have to tie them really tight to get it to stay up. Yes, I slept well.