Easy to put on and hard to take off, the Wrightsock Merino CoolMesh II Crew Sock combines a Merino Wool outer layer with a CoolMesh II inner sock. The CoolMesh II is the #1 best selling style worldwide, and for good reason. Its lightweight, patented Double Layer (DL) design has a minimal feel that'll keep your feet cool and blister-free. The Dri-WRIGHT II performance fibers manage moisture to keep feet dry and fresh. And there's a Stabilizer Zone in the arch that provides support while locking the sock in-place. It's the perfect sock for people who want the benefits of wool, but don't want the wool against their skin. Run, walk, and hike in total comfort with the Wrightsock Merino CoolMesh II Crew Sport Sock., Design captures the many benefits of wool, but not on the skin,,Mesh panel for enhanced breathability,,Dri-WRIGHT II performance fibers wick moisture and increase durability,,Patented Double Layer (DL) design keeps feet cool and blister-free,,Stabilizer Zone in arch locks sock in-place,,Style is #1 best seller worldwide,,Enhance performance and fit,,Perfect for trails, travel and the office,,No Blisters, Guaranteed!