Why invest in one of something when you can get two for the same price? That logic sent us scouring the internet for swimsuits that do double duty in the style department and in functionality. But reversible swimwear doesn’t only save money — it saves space (especially if you’re planning a weekend getaway with just a small duffel). Keep scrolling to shop 15 — er, 30 — suits that will have you switching it up all Summer. You’re about to save a lot of time planning your different beach-day looks.