Smartwool Smartwool Logo Ball Cap in Light Gray NWT The classics never really go out of style. The Smartwool® Logo Ball Cap is made of woven cotton twill with an adjustable back closure and a curved brim. Plus, it’s a wearable reminder that you should always go far and feel good on every adventure. Features: Woven cotton twill construction Adjustable back closure provides a secure fit Curved brim Smartwool® logo patch Knit in Vietnam: 100% Cotton.