Design: This tourmaline wrist strap is designed to help reduce swelling, pain and inflammation. Two options: Choose between a one or two pack. Therapy and support: Ideal for use when exercising, typing or during flare ups of the wrist. Wrist band: Get a self heating therapy wrist support. Magnetic therapy: Strap uses unique magnetic therapy, penetrating into skin and stimulating acupuncture point. Additional features: Helps to promote blood circulation and prevent arthropathy. Self Heating Therapy Wrist Support | Black | Living Social