Premium Fabric and Softer feel! Functional,Fun to Wear, and makes a great gift for that Nurse or Medical Professional in your life! These colorful compression socks provide excellent support for you at work! They feature gradient compression that delivers controlled pressure from ankle to calf in order to promote better blood flow throughout the lower leg. Wear them daily for lower leg support and enjoy the comfort of a non-restrictive band and built in arch support. 10-14mmHg gradient compression 87% nylon, 13% lycra/spandex Energize tired legs Reduce muscle strain and Relieve varicose vein discomfort Prevent swelling Non-Restrictive comfort top Built-in arch support Machine wash warm with like colors. Do not bleach. Tumble dry. These are Regular size womens sock size 9-11. (Womans U.S. shoe size ranging from 6-10) Compression socks are designed to be tight, however if you have larger calfs these may not fit.