What Our Gearhead(R) Experts Are Saying:"These are my go-to socks for tempo runs and gym sessions. They're light, breathable, and never show above my shoes. I've never had to stop to adjust them thanks to the heel grip, and even with zero cushion, they still feel supportive."When we want to keep things light and fast, we lace up with the Run Zero Cushion No Show Socks from Smartwool. Built for minimal bulk and maximum breathability, these socks stay hidden while delivering high-performance comfort during road runs, gym workouts, and everyday training. A soft Merino wool blend wicks moisture and resists odor, while Indestructawool(TM) tech adds reinforcement where we need it most. The 4 Degree(TM) Elite Fit System locks in a secure fit, and a heel gripper keeps everything in place from warm-up to cooldown. With a Virtually Seamless(TM) toe and no-show silhouette, these socks disappear on foot-until you realize you never had to think about them.