Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor design

I have suffered on and off from knee pain when running for a few years now. It seems to act up most when training for marathons. I have tried a few different knee straps to treat the problem - ChoPat, Mueller, etc. This one is the worst. I liked the idea of the V-shaped rubberized brace that can help your knee track more accurately. The problem with this brace is that the strap has no elastic. It is single piece of velcro and has no stretch. Thus it is impossible to put it on correctly. You have to make it either too tight or too loose