I've got a pair of Sugio tights that used to be pretty waterproof. Now when ever it rains all of the water that hits my shins runs down my leg, into my socks, and then into my shoes. So by the time I get home my feet feel like they're each in a fish bowl. This didn't happen when I first got these tights so I'm guessing maybe some protective coating they used to have has just worn off or something.

So I was wondering if anyone has encountered a similar problem and knows of some kind of spray or treatment or something I can do that will make them waterproof again. Or if I should just get a new pair (I'd rather not if I can avoid it since they were expensive).

Thanks!