Core-Spun by Therafirm Support Socks for Men and Women, look and feel like a soft, comfortable everyday sock with the added benefit of lab tested true gradient compression. Ultra stretchy, soft yarns make Core-Spun support socks easier to put on and more comfortable to wear. Gradient compression promotes better circulation and helps prevent swelling, leg fatigue and leg discomfort such as heavy-feeling legs, cramps and early varicose veins. They are also very useful in helping prevent DVT (deep vein thrombosis) for regular or long distance travellers or 'at-risk' travellers. Core-Spun yarns are made by twisting fibres around an inner fibre, creating one yarn. This process is used to enhance functional properties of fabrics, especially stretch and comfort, as well as durability. Made using moisture wicking yarns to wick away moisture, we've done our own test where these socks have been worn consistently for 4 days and once taken off, they were both dry and odourless. 15-20 mmHg Graduated Compression Made with Core Spun Yarns Easier to get on and more comfortable to wear Better durability Non-restrictive comfort tops Smooth toe seam and comfort toe area Made with Micro Cool moisture wicking yarns