23 Travel Essentials Our Editors Can't Fly Without

"Always, always, always pack a swimsuit. Whether traveling for business or pleasure, you never know when an opportunity to swim in the perfect pool, river, or lake will appear and you want to be ready to dive in. Trust me. I have spent too many hours trying to find a swimsuit off season, in small towns and remote places, just so I could take a dip. Just pack the suit; it doesn't take up a lot of space." — Susi May, senior director, editorial

Topshop Pamela One-Piece Swimsuit ($38)