I need to know where you can buy those things that alot of bodybuilders use. I see regualer people wearing them at the gym too, people that have bum knees or elbows, they usually pull them over thier knees or elbows for a little extra support, theyre not wraps but one peice of material theyre flexible and made out of what looks to be like rubber or nylon or some sort of stretchy material, Id like to know the name of those things too???????