Wicking fabric. Stretch. Crew neck. Short sleeve. Lightweight. Twin-needle stitching on hem and arms. Recycled polyester. We recommend using block out vinyl and inks.Product contains no branded neck or waist label. Removable Kimble or looped garment tags. Inner seam label holds important product information on one label with a second label containing brand information which can be cut-away. UPF 40+.