Our Infrared Technology No-Show Tab sock provides the casual look you want with the comfort and performance you need. Invisible in low-top shoes, such as sneakers. Combines fashion and technology to deliver maximum comfort and durability for all day wear. Featuring a unique arch band to keep the sock comfortably in place, and a soft tab to protect your heel from rubbing. Reinforced heel and toe, with select cushion for added comfort and support. Plus, TRUEENERGY® socks use yarn infused with NASA-inspired infrared technology. Infrared ceramic crystals are ground & permanently infused into the polymer yarn used. When combined with your body’s natural heat it forms infrared energy to improve circulation and tissue regeneration—promoting recovery and performance.