What exercises can you do with a foam roller for your calves? You’ll definitely get an overview here. But it’s not just the classic BLACKROLL® STANDARD foam roller that provides a restorative treat for your calves—the BLACKROLL® DUOBALL 08 does too. Each of your calves consists of two parallel muscle strands, which you can reach well with the foam roller, but the DUOBALL provides an even more intense experience, as it targets these muscles with greater precision. By the way, speed determines the effect: slow rolling with the foam roller relaxes your calves, while fast rolling activates them.