100% polyester - Athletic fit - Sporty flat knit collar stays crisp for a professional appearance - Raglan sleeves for enhanced range of motion - Smooth lockstitch seams reduce friction for greater comfort - Timberland PRO brand label at left sleeve - Timberland PRO WickWork technology with anti-odor treatment forces moisture out to help keep you drier and more comfortable - UPF rating of 50+ blocks over 98% of the sun's harmful rays -