I highly recommend Halfmoon's cork massage roller. The smaller diameter relative to traditional foam rollers makes it easier to control the direction and force. I also find it easier to use than massage balls, which can roll out of place. My husband loves using this cork massage roller for his feet and forearms, for the same reason. As a petite woman, I also find it easer to use this roller for my calves.
Company has great products. I have foam blocks but prefer cork ones which are hard to find. Half moon has them and then some. Customer service is exceptional!!!