When I hop onto a bicycle in my chinos, I have to watch that they don't flap over the chain and get an ugly grease mark. I'm aware that some people buy little velcro straps to wrap around their ankles to solve this problem. I don't like them.
I was thinking that another solution would be to sew a little button inside the ankle on the outer side, either a real button or a snap button, that sort of clips the flap away from the chain.
I might talk to Peter Lee about making this for a new cotton suit, or talk to an alterationist about whether this is possible to add to a pair of pants (I doubt it). Yeah, I know I can always just roll up the cuff. It's just an idea. What do you think? Does this already exist?