Sydney Sweeney's Must Haves: From a Cooling Ice Roller to Hardside Luggage

This Bai Pilavo Pineapple Mango Drink ($29 for 12) has become Sweeney's secret weapon for all-day hydration, and the actor says she loves the way the antioxidant-infused drink adds "so much flavor" to her day. "Literally my entire refrigerator in my trailer and in my hotel room is stocked with Bai wherever I go. I get everybody hooked on it, which is really fun," Sweeney says.

Pro Tip: Bai comes in a wide variety of flavors (many of which are perfect for summer), but Sweeney says her personal favorites are the Pilavo Pineapple Mango and Brasilia Blueberry.