This combination of material for this tee gives you a high-quality garment that is designed with advanced technology and optimum performance in mind. With a standard fit and Double Knit Jaquard construction, this collared shirt features a long sleeve with an ability to be rolled into a lapped cuff sleeve, a fabric weight of 170 GSM /5.0 Oz, and contains UPF Sun Protection 50+. Complies with Prop 65.