I would also be worried they would rub and irritate the leg. Usually zip ties are kept loose so you don't cut off circulation or anything and they're comfortable to wear. If you did that the flag part would move around likely rubbing and making sores on the leg
EDIT: Plus I'd also be worried of the risk of them catching it on something. I'd just use different colors for each year
EDIT: Plus I'd also be worried of the risk of them catching it on something. I'd just use different colors for each year
