I love the Back Baller – it takes a small bit of getting used to but it is a real step up in terms of rolling. It is brilliant for the back, when using the twin rollers and just one. The hardness of the roller is great too. One thing I really love though is that I always found it tough to work hamstrings on the conventional rollers. The Back Baller is brilliant in that regard. This is a tremendous tool. I am not an active sports person anymore but the Back Baller is brilliant for a variety of aches and pains. It is a must-have for any sportsperson, high-performance or otherwise.