Thermophore MaxHeat Plus 14 x 27 Large Jobst Relief 20 30 Waist High Steel spoke wheels are strong Hip Kits Steel spoke wheels are strong and maintenance free * Carbon steel frame with TRIPLE coated chrome for an attractive chip proof maintainable finish * Reinforced steel gussets at all weight bearing points provide additional strength * Durable reinforced nylon upholstery * Extra large padded armrests provide comfort and support * Steel spoke wheels are strong and maintenance free * Precision sealed wheel bearings in front and rear ensure long lasting performance and reliability * Extra large heavy duty aluminum ELR provide maximum support are attractive and crack proof Lithium battery power supply *MaxHEAT Plus units let you add additional water in dry environments * Moisture helps the intense heat penetrate even more deeply relieving pain relaxing muscle spasm and increasing rejuvenating circulation * Two switch options put you in total control of the heat level minute by minute Just hold down or press on for heat and release or press off to cool depending on the style