Nike Aerobill Classic 99 Open Print Baseball Cap Celebrate the Open Championships 2021 in style, the Nike Aerobill Classic 99 Print Cap has been designed to celebrate this years Open with an all over print that is sure to stand out on the course. The 6-panel cap has been constructed with a lightweight 4-way stretch fabric featuring Nike’s Aerobill technology with sweat-wicking comfort which provides excellent breathability for year round comfort. FEATURES AT A GLANCE 6 Panel cap Lightweight 4-way stretch fabric Nike Aerobill moisture-wicking technology Excellent breathability   All-over print Celebrates the 2021 Open Championship