Nothing gets a party started like your favorite jams, so we rounded up the best Bluetooth, portable speakers. They are all highly water resistant—for snowstorms, pools, and après hot tub parties—and have roughly the same battery life (worth about 8 hours of your noodle-dancing playlist). Plus, they all fit in a backpack or pocket. Check ‘em out. Then wave your hands in the air and shake your derriere.