The Williams Half-Zip is a surprisingly light layer in 92% polyester and 8% spandex with hybrid mesh accents at the neck, chin guard, and shoulder. Featuring a mock collar with a half-zip and an exposed zipper with logo zipper pull, stretch elastic binding at cuff, C&B pennant heat transfer at the back neck, and grosgrain locker loop. This CB DryTec style offers moisture wicking and 50+ UPF sun protection.