Wigwam's Cacti Mid-Crew starts with Ingenius® technology — a patented sock-and-liner-in-one construction that eliminates the slipping and bunching that cause blisters, without the hassle of wearing two socks. Merino Wool and moisture-wicking fibers keep feet dry and fresh mile after mile, while the bold desert cactus print adds some personality to the trail. FEETures: Sock and liner in one design eliminates the need for layering INgenius zone lining maximizes moisture control inside boots Breathable mesh instep promotes airflow to reduce heat buildup Elasticized arch delivers a supportive, locked-in fit Seamless toe closure eliminates pressure inside footwear INgenius™ Dry Feet No Blisters Merino Wool Breathable Mesh Seamless Toe Insulating Wool Elasticized Arch Made in the USA 41% Stretch Nylon, 35% Merino Wool, 19% Polyester, 5% Spandex, Liner: 100% Stretch Nylon