With an Achilles heel tab designed to prevent slippage, Smartwool’s Run Zero Cushion Low Ankle Sock offers the comfort and versatility of a barely-there sock without the consequences. With a host of performance features that tackle trails, pavement, and treadmills with equal aplomb, the Run Zero Cushion Low Ankle Sock is ready for every mission. A combination of breathable mesh zones, Indestructawool technology, and a Virtually Seamless toe construction give this sock a performance-driven profile that oozes with breathability, durability, and comfort. A low ankle cut with zero cushioning throughout means that this sock can slide into every shoe with a barely-there feel. It continues to blend synthetic with merino wool fibers to achieve the perfect balance between moisture-wicking, quick-drying, and odor-resistant technology and lightweight comfort. Essentially, it’s the perfect sock to run the distance, and it does so with a no-bulk feel.