Naomi Osaka’s Must Haves, From Her Favorite Tennis Racket to Coconut Water

One of Osaka's nonnegotiables? Always keeping Zico 100% Coconut Water ($24) on hand. "I play a lot of tennis, so I'm constantly hydrating," she says. Between training, playing in matches, and running after her daughter, Osaka is always on the move. This pure coconut water is naturally packed with electrolytes, sugar free, and has as much potassium as a banana, making it ideal for her active lifestyle.