Winner of the 1997 Backpacker Magazine's Great Sock Test. When you need
extra insulation against the elements, good shock absorption and support under
heavy loads this is the sock for you. Heavy cushioning throughout this sock
provides extra comfort, insulation and protection, making it perfect for hardcore
hiking, long treks and heavy-laden backpacking. Elasticized ankle brace holds
heel in place and allows for less bulk and greater forward flex in the boot. High
Density Footbed (HDF) for improved performance, comfort and durability. Crew height.

77% SmartWool, 22% nylon, 1% elastic.