All time next to skin comfortSimms' Waderwick Core Crewneck is the first layer of fight in your stormy weather arsenal. Shirts corner next to skin comfort via double knit fabric that mechanically wicks moisture. Improved 2 way stretch knit construction boosts mobility and COR3 features, such as anti-odor tech and a UPF 30 rating, improve layering performance.FEATURESMechanically wicks moisture for fourseason next to skin comfort & enhances performance of technical mid & outer layers.2 way mechanical stretch knit fabric offers improved mobility.SPECIFICATIONSFabric Tech: 100% polyester WADERWICK double knit with COR3 Technology.Aprox. Weight: 5.6 oz. /160gColor: CoalSize: XXL