Product Description Homedics Thera-P massaging magnetic insoles energize your body through your feet and provide all-day relief. The use of magnets has become an integral part of naturopathic medicine, so use of these insoles may be more than just therapeutic. Homedics is an innovator in home medical supplies as shown with their revolutionary magnetic insoles. Product Dimensions Dimensions: Size LG/X-LG: 5" x 10"Long -------------------------------------------------------------------------------- Product Feature Summary Alternating wave-form magnet Lined with Dozens of Acupressor Nodules 400+ gauss strength Great for home, work, or play Massaging surface