Oval shaped with an adjustable strap for ankle sprains knee injuries elbow pain and also wrists hands shoulders and chest therapearl hot and cold therapyconforms to your body extremely comfortable and soft on skinmess free and reusablenon toxic free of bpa lead latex and phthalatesmicrowaveable and freezableuse hotpearls conform and deliver soothing heat therapy to the desired body part use for muscle painspasms joint stiffness soreness continuous aches pre workout activity use coldpearls create