DD is hard on legs, lol. Granted, between high school and travel she was using them six days a week, but the upper strap connected to the knee busted out.Hmmm...first I've heard of that. I know a couple people that have been very happy with theirs.
She's currently using these, which she likes much more than the Mizuno or Wilson she's had, mainly due to the knee padding. Can't beat the price, either!
Rawlings Youth 15" XRD Series Leg/Shin Guards | Softball.com