A quality compression garment stimulates blood circulation, and the more circulation your legs get, the less muscle fatigue you'll experience. The Capo Active 15 Compression Socks are a no brainer accompaniment to your ride. The Active 15 socks give quality comfort, advanced compression, and durability to assure your investment. The are constructed from a lightweight 200 needle high gauge Olefin. Renowned for its strength and resistance to everything from abrasion to mildew, Olefin is as durable as it gets for cycling socks. The Active 15s are a thin single layer sock with a 15cm cuff and footbed. The Capo Active 15 Compression Socks are available in SmallMedium, or LargeX Large, and in Black or White.