Spenco Full Length Thinsole Orthotic Arch Supports SPENCO RX ThinSole Orthotics Firm customizable support for dress or tight fitting shoes. Helps control, stabilize and balance the foot for tighter fitting shoes. Heat moldable for a custom fit. SPENCO Material absorbs shock and reduces friction to improve overall foot comfort. Seven sizes fit any shoe or boot - Men's 6-15 and Women's 3-12. ThinSole Full Length Orthotic Rx is designed to support your foot's arch and absorb shock of everyday activity. The unique shell provides excellent stability without the added bulk of most orthotics. The shell of the insole is bonded to a layer of closed-cell nitrogen-injected SPENCO material and covered with a 4-way stretch nylon. Thinsole Orthotics are a perfect fit for dress and casual shoes. Experience the difference of ThinSole Orthotic Support! Whether you need extra arch support to help treat Plantar Fasciitis or just some extra cushioning to help relieve a Heel Spur, SPENCO Insoles have the highest quality products to help keep you comfortable and on your feet. Most importantly this insole line, which includes the Orthotics RX and ThinSole Orthotics RX, is our most popular among our customers, proving that these insoles provide the needed arch support that everyone find more comfortable. ONE YEAR UNCONDITIONAL GUARANTEE!