very good 272

I find the application very pleasant on the back, so you can fine massage itself. Tensions and even an extreme muscle stiffness I already was able to loosen. Of course, usually in addition to creams and other exercises, but the Blackroll help me really well. The Duoball is also easier to use, especially in the shoulders, as the individual balls. He is also not too hard, I could use a little harder him quite.

Since I use it only for a short time, I can not say anything yet about durability. Possibly Possible defects I wear after.

Addendum 15:03:15
I use them (sometimes several times) a day and can now detect defects first. The rolls are flat, they no longer produce quite as much pressure. But since it is really what brings me, I'll probably buy me back a Duoball.