The Regal sock features an acrylic/Lycra blend which stretches to conform to the residual limb, while moisture wicking properties keep wearer dry and comfortable. Fleeced interior. Rounded toe prevents distal bunching. Machine wash and dry. The Regal Stretch provides you with the latest advancement in fiber technology and knitting methods. The combination of Acrylic and Lycra Fibers gives you a degree of stretch and conformance to your residual limb not possible with other fibers while wicking away moisture to ensure greater comfort.