Compression Sleeves. Travel in comfort and arrive at your destination without swollen feet! Gradual compression helps stimulate blood flow bad reduce swelling. These compression socks will help to improve circulation and reduce swelling on long flights and for anyone sitting at a desk or standing for long periods of time. Help to prevent deep vein thrombosis, leg cramps and edema. Washable but NOT dryable. Must be air dried. We will not be able to accept returns for items that have been put in the dryer.