Made with premium cotton and 200-needle count for flexibility and comfort. Our socks offer mild-moderate compression (15-20 mmHg) - appropriate for all-day, everyday wear. Compression garments are made in a variety of support levels, each designed to address different needs. These levels are most commonly expressed in millimeters of mercury (abbreviated as mmHg). Generally, graduated compression is displayed in ranges. The higher the numerical value, the stronger the support level indicated. For example, a 20-30 mmHg garment will offer more support and feel tighter than a 15-20 mmHg garment. All VIM & VIGR legwear is offered in a 15-20 mmHg compression level and select styles are available in 20-30 mmHg. 15-20 MMHG Support Level: Moderate Ideal for all-day, every day wear. Offers moderate support to reduce ankle and leg swelling, ease tired and achy legs, and aid in muscle recovery. Commonly used for travel, mild to moderate edema, pregnancy, spider and varicose veins. 20-30 MMHG Support Level: Moderate to Firm 20-30 mmHg is a medical grade compression level and often comes as a prescription or recommendation by a healthcare provider. Please consult with your healthcare provider before choosing this level of support. Commonly used for moderate edema, lymphedema, Deep Vein Thrombosis (DVT), pre and post-surgical applications, moderate spider and varicose veins. 30-40 MMHG Support Level: Firm 30-40 mmHg is a prescription compression level and is often prescribed by a doctor for treating health conditions such as venous insufficiency, deep vein thrombosis (DVT) and lymphedema. Please consult with your healthcare provider before choosing this level of support.