Stay cool and comfortable no matter where the game takes you in this Boston Red Sox Dri-FIT Club Adjustable Hat. Featuring Nike's advanced Dri-FIT technology, the hat wicks away moisture to keep you cool and comfortable even on the hottest summer days. The interior sweatband, made from a polyester-spandex blend, provides a comfortable, secure fit so you can focus on cheering on your team from the first pitch to the final out.