Shop › Port Authority® Classic Knit Watch Cap Image 1 of 1 Port Authority® Classic Knit Watch Cap $14.00 This heavyweight, chunky rib knit cap has a traditional look and is always cold-weather-ready.Fabric: 100% acrylic Color: Army Black Graphite Navy Quantity: Purchase Added! This heavyweight, chunky rib knit cap has a traditional look and is always cold-weather-ready.Fabric: 100% acrylic