Comfortably holds foot at recommended therapeutic angle throughout the night. Durable cushion for all night comfort. Helps to relieve morning foot and heel pain. Trusted brand since 1918. Plantar Fasciitis Sleep Support: Soft, breathable material for overnight comfort. Breathable, moisture releasing straps are durable and soft. Flexible edges for comfortable, customized fit. Durable cushion for all night comfort. The Ace Brand Plantar Fasciitis Sleep Support can be used on the left or right foot, with or without a sock. Comfortably holds the foot in the recommended therapeutic position all night long for those suffering from plantar fasciitis. For best performance, apply support as described on side of box. Provides the highest level of support and stabilization, using flexible, hinged, plastic and/or aluminum stabilizers to help relieve symptoms associated with acute injuries. Size Selection: Designed for use on either the left or right foot. The adjustable fasteners create a customized fit for most body types. Measure the circumference approximately 2 inches above the ankle bone. Size: Adjust to fit; In: 8-5; Cm: 20.3-38.1. For almost 100 years, Ace Brand has been The trusted name in pain prevention, muscle and joint support. Today, this heritage grows with the addition of the world-class material science technology of 3M combined with our long term commitment to provide products that have the correct support, comfort, fit and medical efficacy. From the home to the job site and on the athletic field, people everywhere rely on ACE Brand products for the support they need to keep going. www.acebrand.com. For more product information and how to use product videos, go to www.acebrand.com. Questions? 1-800-537-2191. Acebrand.com. Package is recyclable. Made in China for 3M.