Callaway Men's Sidewinder Vest and Callaway Men's Golf Vest. Men's X-Series wind-sport mesh vests by Callaway Golf. Windsport vest for men. Designed exclusively for core golf, X-Series offers a variety of products and styles capable of performing in any weather condition. With a focus on function, fit, technology, performance and innovation, this Callaway Men's Golf Vest X-Series knit combines the latest in fabric technology with the style and design that is Callaway Golf. Full zip vest with mesh side panels, side zipper pockets, adjustable pull cord, heat transfer Callaway Logo on bottom left, and heat transfer Chevron on center back neck. Partner this piece with the Women's CW25712 vest for that uniform look at your corporate event. 100% polyester.