A revolutionary performance hat worn by all clubs and its players—throughout the entire MLB season including Spring Training, Batting Practice and select regular season games. Wear what the pros wear and show your Beantown pride wherever you are—all day every day with this MLB Boston Red Sox Batting Practice 59FIFTY hat from New Era! ; Infused with New Era's NE TECH helps keep players cool and comfortable on the diamond. New state-of-the-art performance-diamond patterned fabric making it lightweight and breathable. Features SOLARERA technology - a 50+ UV protection that helps deflect the sun's unforgiving rays. COOLERA technology wicks away sweat to keep players comfortable and performing at their best. Traditional six-panel construction with contrast top button, breathable eyelets, contrast flat visor and fitted cap construction. Front-raised Boston Redsox team logo embroidery on front. Embroidered MLB logo at rear. New Era 59FIFTY Fitted sticker decal on top visor and 3-D MLB Authentic Collection sticker on undervisor for authenticity. New Era-branded taping on the inside. Made of 100% woven polyester. Spot wipe to clean. Imported. Measurements: ; Circumference: 23 in ; Brim: 2 3 4 in ; Product measurements were taken using size 7 3/8. Please note that measurements may vary by size.