These technological, graduated compression support socks are made with unique, core spun yarns, meaning they are easier to get into, more comfortable to wear and have great durability. These support socks are extremely stretchy, soft against the skin, and are made with moisture wicking yarns to wick sweat quickly away from the skin, lowering bacteria levels and preventing odours and infections, keeping feet and legs fresher and cooler for longer. An extra roomy toe box area, makes these flight socks comfortable for the toes, as they are not compressed or squashed and due to their stretchy nature, the foot length has good adaptability compared to that of other brands. If you are concerned about a long foot length, then these socks may be the answer to any sizing issue, as they stretch extremely well. Our Core-Spun by Therafirm Support Socks are available up to XXL size, which caters fro a larger calf, please look at the size chart before ordering. These are a medium weight compression and are more useful for those who already suffer with leg fatigue, varicose veins, heavy leg syndrome, swelling, or venous insufficiency and are good at helping to prevent DVT. Graduated Compresion 15-20 mmHg technological Core Spun Yarns Moisture Wick Fabric Non-restrictive Top Bands Generous Toe Area Made with Coolmax & Polyester Wide Calf Size Available Cushioned sole If you have congestive heart failure, arterial disorders or an existing DVT, please consult your doctor before using compression socks.