Our most popular year round model provides superior cooling when temps are hot, and keeps your warm as the temperature drops. DriComfortA(R) GEO 365 mineral infused fabric controls temperature whether it&';s hot our cold, so use it year-round, over a tee, under a vest of jacket, or lounge around the house in comfort. Pulls moisture away from the skin, and gives you all day sun protection with it&';s UPF50 rating. Easy care wrinkle free and won&';t shrink. Machine wash/tumble dry.