MEDIUM CUSHION AND MODERATE COMPRESSION. NATURAL MERINO WOOL. A beautifully crafted sock with natural Merino Wool to wick moisture. The PURSUIT is ideal for year-round trail running, day hiking or mountain biking. The FOUR quarter crew sock is the tallest style with Swiftwick's signature double-cuff construction. Their most popular cuff height for cycling and trail running, it is incredibly versatile. Made in USA.