Two weeks ago I've tried their Black roll with a friend, this was very excited about the fascial training and it has helped her with her runner's knee (massage Iliotibialband the role helps there). I for one plastic roll (probably in the production costs of less than 1) find very exaggerated 30, I found the SoftX role. I like this better than the Blackroll because it was made of a different polymer which like velvet but still feels just as tough and effective as Blackroll. The material is in the first mm faintly after and then only adamant that I find very pleasant. After the first use I feel my legs very relaxed on even though it is really painful in the beginning. It is a small DinA3 Posters settled with various exercises, very helpful. Who needs more detailed instructions can also watch YouTube, a link is listed.