Asymmetry's never looked more appealing than in the Royal Robbins Essential Peak Elbow Sleeve shirt. This travel-friendly top's also been carefully engineered for peak performance. Its Stretch jersey combines comfy cotton, durable polyester and shape-retaining spandex. Dri X-treme wicking, added to the mix, will help keep you dry, and UPF 50+ will help protect you from the sun's harmful rays. 58% cotton, 37% polyester, 5% spandex. Trim fit, wrinkle resistant, Dri X-treme quick drying, asymmetric soft crew with stitched down darts. Material: Cotton, polyester, spandex.