Abstract: An elastic exercise device is provided, which is made of an expanded elastomer that has the strength and elasticity suitable for performing tension-type exercises. The device preferably consists of a single elongated piece or of an endless loop of desired size and shape. The device can have various cross-sectional profiles, such as a fully filled cylindrical configuration, a tubular configuration, an oval or flat band configuration or a multistrand configuration. The device can be made from elastomer materials such as neoprene or polyethylene by extrusion, casting or injection molding.