So, the guys at Rollga have reinvented the foam roller. I know, I didn't believe it either. They grabbed me at the Perform Better Summit in Providence with the old “do you have 30 seconds” pitch.
Thankfully, I was smart enough to stop. At the end of much longer than thirty seconds I was both happy and sad. Happy because I had found a new product that worked better than the old one. Sad that I had to spend about five hundred dollars to replace all my rollers.
Here's the difference. With the Rollga your bones drop into the grooves in the roller. This allows the muscle to be accessed in a far greater way. The Rollga is better for hips, shoulders, upper back, really everywhere.
PS- I don't work for Rollga. I just like to tell my friends about good stuff.