I bought this item for my knees, as I have a fair bit cartilage damage on both knees and wanted to try to keep working out (under my physios advice) whilst offering my knees some protection. I have used tubular bandages and neoprene supports in the past and find them tight on my knee caps causing me pain under my patella's, as well as slipping down off my quads.
These wraps are wonderful support for my knees. They help keep the kneecap secure but flexible and the wrap technique really is useful in getting the support just as you need it. You can keep these wraps not too tight but the material has enough grip texture to stay where you want it. Whilst I haven't fastened mine very tight there is a lot of strength and stretch in these and I'm fairly confident that most people will be able to achieve their desired support. I'm 5'5", female, average build (size 12) and these wraps fit me just fine, I was initially worried that they would be too big but they are a great size, I think people bigger than me would also find them suitable.
I am a hooper (as in hula hooper) and I wanted something to protect my knees whilst learning to spin on the legs, after my first attempts I was really quite bruised and I wished I'd thought of these wraps first. I've given them a little try whilst spinning on the legs and they really have taken the impact out of the hoop, whilst keeping a good grip on the hoop. I thought I would need some bigger padding but these are working well, they have good cushioning whilst remaining close to the leg, they don't feel bulky at all.
I'm very happy with these the only down side is that I wish the softer half of the Velcro was a little longer than the hooked half, you have to match up the halves exactly to stop the hooked part catching on the strip itself which might lessen the life span, though I'm sure after a bit of practice strapping I will be able to do this. All in all these were exactly what I needed.