When revamping one of Darn Tough's top-selling socks, they've made sure to get it right. There's added mesh panels on the top of the foot for improved breathability, introduced a new smooth ribbing upper that ensures the sock stays in place, and extended the cushioning over the Achilles tendon. These enhancements are just a few of the significant improvements we've made to one of the lightest hiking socks available.  A performance fit means no slipping, no bunching, no blisters for peak hiking comfort Light Hiker socks have cushioning underfoot, atop the ankle, and up the Achilles to keep feet comfortable for miles and miles Multi-zone mesh panels improve venting and flexibility, while reducing bulk and pressure points Merino Wool is at home on the trail, naturally moving moisture to keep feet fresh and dry in all weather Lightweight socks breathe naturally and deliver flexible, all-day comfort for summer hiking Materials 54% Nylon, 43% merino wool, 3% lycra spandex