Show off your San Francisco 49ers pride with this New Era Adventure Perform 9SEVENTY Adjustable Hat. The perforated mid and rear panels provide enhanced breathability, keeping your head cool and comfortable all day long. Featuring COOLERA technology that wicks away sweat and MICROERA technology that acts as an anti-microbial to reduce odor, this hat will keep you feeling fresh and confident whether you're cheering on the 49ers or enjoying a sunny day out.