Note: Standard US size, please choose size as your usual wear, classic fit. Materials: Polyester; Wrinkle-free, Quick Dry and Soft UPF 50+: Excellent protection from the harmful effects of the Sun's UV Radiation Quick Dry: This men's long sleeve shirt features high performance wicking fabric that pulls moisture away from skin, breathes freely and dries quickly for active Lightweight: Flatlock seamlines; Raglan sleeves provide full range of motion; Classic Fit Perfect for: Running, Workout, Hiking, Camping, Fishing, Sailing, Swimming and Thermal Underwear