The new Heather Compression Calf Sleeves have been updated with added length, pair perfectly with the Heather Compression Arm Sleeve and are currently available in Heather Black and Heather Gray colorways. The quick-dry fabric helps you stay cool and dry, while flat seams reduce chaffing - popular among runners, but ideal for a variety of sports and active lifestyles. Made out of a durable and soft Polyester/Polyurethane fabric and permeated with AQUA-TITANIUM technology.