This mat is so grippy and sticky that I no longer slip and slide when in class. I trust that I won't slide this has helped me focus more on my poses and be more confident in turn this has improved my practice. I love this B Mat . I have the 6MM sienna which is great for my knees and joints. However, I think that I am going to purchase an everyday 4MM mat as it is less bulky to carry around. I am obsessed with the Beetroot color, and I am hoping that they will offer it in the 4MM size.