Epiony Massage Ball Blue. Keep you or your horse supple and relaxed with the Epiony Massage Ball. Presenting a feel-good massage, the Massage Ball uses cold gel technology with a 360 degree rotating stainless steel ball to help massage the body to help reduce and soothe aches, tight muscles, stress and inflammation. The stainless steel ball can be used hot or cold and can hold its temperature for up to 40 minutes for long-lasting use. With a soft polymer handle for easy grip, the Epiony Massage Ball can be used on a variety of animals and yourself for a relaxing massage.