FEATURES:- Crew Height, Light Weight - Jersey knit construction fits just below the knee. - Custom shrink treated Merino wool. - Reinforced heel and toe. - Elastic support around the arch and cuff. FABRIC CONTENTS: 65% Merino Wool, 31% Nylon, 4% Lycra® Spandex TRUE SEAMLESS Usingthe latest generation of Italian knitting machines, we're able to knitultra-light yet extremely dense socks with an undetectable toeseem,herein Vermont. The result is miles and miles (and miles) ofblister-free bliss. Feel the difference of feeling nothing at all. DARN TOUGH UNCONDITIONAL LIFETIME GUARANTEE Simplyand without strings or conditions: if Darn Tough all weatherperformance socks are not the most comfortable and durable socks youhave ever worn, return them for another pair or your money back. Nostrings. No conditions. For life. When you are really serious aboutsomething you make it yourself.