I had had these rubber fist mitts for a long time, but never had used them much. Partly because I had no padlocks to fit the small lockable cuffs which would make sure that they would keep in place, even though it would be some challenge to get free of those mitts when having those mitts on both hands. I had finally bought a set of padlocks when I was at Delta the previous year, but they were stolen when my gear bag was stolen ten days later.