Advanced Medical Device for Plantar Fasciitis, Heel Pain & Swelling. 24 Hour Relief & Protection with an Easy-On Fit for Continuous Support, Day or Night. Soft, Moisture-Wicking Fabric. Wear Comfortably Under Socks for Extra Support. Wear During Walking or Exercising for Extra Protection. Gently Lifts & Stretches the Plantar Fascia. 2 Sleeves per package.