For comfort on runs or during outdoor training, reach for this adidas arm sleeve. This lightweight sleeve is made of stretchy jersey fabric to keep your arm cool and dry even as your workout heats up. Strategically placed reflective details enhance visibility for early morning or evening training. CLIMACOOL wicks and disperses sweat for cool, dry and distraction-free performance. CLIMACOOL helps you manage sweat with materials that wick and manage sweat quickly. Its fast-dry fibers give you a fresh-skin feel.