Previous page Core-Spun by Therafirm compression socks look and feel like soft, comfortable everyday socks with the added benefit of true gradient compression. Core-Spun compression features Core-Spun yarns, which are made by twisting fibers around an inner fiber, creating one yarn. This process is used to enhance the functional properties of fabrics, especially stretch, comfort, and durability. Knee High Compression Socks Visit the Store Crew Compression Socks Visit the Store Next page