Therafirm® Ease Bold Knee High 20-30 mmHgMake a statement with bold, fashionable designs. Ease Bold by Therafirm Moderate Fashion Gradient 20 30 mmHg Compression Socks are designed to help prevent edema, leg discomfort and deep vein thrombosis for long distance travelers and to help promote better blood flow, prevent mild swelling, and relieve tired, achy legs and feet. Plus, the soft, ultra stretchy fibers ensure these compression socks are easier to put on and more comfortable to wear.