The goal of smart vacation packing is fewer pieces, more outfits. And swimwear is where most people overpack three bikinis, two one-pieces, four cover-ups, and somehow still nothing to wear to the beach bar.

These seven swimwear pieces are chosen specifically because they multitask. Each one works in the water and out of it.

1. A Solid-Color One-Piece

A well-fitting one-piece in black, navy, or a neutral tone is the foundation. Wear it as a bodysuit under a skirt or shorts for lunch. Wear it to the pool. Wear it under a cover-up for dinner. This one piece does the work of three.