An exercise device, includes: a hollow cylindrical roller, two end plates fixable at the opposite ends of the roller the inner envelope of the roller and the end plates essentially defining a cavity, and each of the end plates further including centrally situated bearing arrangement, two supporting feet each having a first and a second support wherein: the first and the second support of the supporting feet are alignable at the end plates to set the supports at an angle relative to each other, and each of the supporting feet being fixable at the end plates of the roller by a fastening arrangement so that the supporting feet are at least functionally connected to the bearing arrangements of the associated end plates and the roller being rotatably fixed to the supporting feet.