- The primary materials that compose this product contain a minimum of 20 percent recycled content. - Brooks Apparel Size Chart - Engineered for the modern runner, the Brooks® Dash 1/2 Zip 3.0 is your go-to layering essential, delivering distraction-free comfort with lightweight warmth and next-level mobility. Crafted in a semi-fitted silhouette for a streamlined look, it's built with advanced stretch fabric that adapts to your every move-whether you're pacing through early morning miles or cooling down post-run. The collared neck with a half-zipper design offers adjustable ventilation, while thumbholes keep sleeves securely in place for a stay-put feel. Reflective branding enhances visibility in low-light conditions, ensuring you're seen and safe. The pull-on design and smooth construction eliminate bulk and chafing, making it ideal for layering without compromising breathability or performance. - 88% recycled polyester, 12% spandex. - Machine washable. - Imported.