Fit and Design: Contoured fit Crewneck 4-way stretch fabric Therma midweight, soft touch fabric that is designed to work with your outer layers to keep you warm and dry in any conditions Thumb holes Flatlock stitching Solid with design on sleeves Technology: UPF 50+ (UV) rated for sun protection Vented armpits allow for enhanced breathability Antimicrobial & moisture-wicking Additional Details: Machine washer & dryer friendly