ThermoSkin Plantar FXT X Small M 3 5 W 4 6 Pen Pencil Aids 0 ) * Proven durability 14283 0 ) * Proven durability * The Onyx is proven tough enough to withstand a minimum of 50 drops * Automatic turn on and off for fast and easy spot checks * Portable Take the Nonin Onyx Vantage 9590 anywhere * Weighs less than two ounces * Made in USA square x 12 1 2 in X Small Mens 3 5 Womens 4 6 * Has a semi rigid strap that pulls the toes upward and the foot into a slight dorsiflexion position * This gently stretches the plantar fascia so it may heal * The combination of the thermal properties that help reduce inflamation and the stretching of the plantar fascia while sleeping may aid in the treatment of Plantar Fasciitis * Non slip Safety SoleTM rubber grip bottom helps prevent slipping *