Terramar Sports Men's Dri Release Short Sleeve Crew Features drirelease with Freshguard - Patented poly/cotton blend engineered to create a natural push/pull effect that accelerates wicking and drying - Freshguard treatment Inhibits the growth of bacteria that causes odor Ultra-soft brushed surface traps air and allows for increased airflow/breathability 4-way stretch for ease of movement UPF rating 25+