Buy a chlorine-resistant one-piece

Get a chlorine-resistant one-piece, not a fashion bikini or a flimsy tankini.

Water aerobics is not lounging poolside. You’re moving fast, jumping, and spending hours in chemically treated water. Fashion swimsuits (the kind with ruching, bows, or cheap spandex) will sag, stretch, and probably fall off your shoulders by week three. Worse, chlorine eats regular spandex alive — you’ll have a faded, baggy suit in two months.

Look for a suit labeled “chlorine-resistant” (usually a blend of polyester and PBT) from a brand like TYR, Speedo, or Arena. Racerback or high-neck styles keep straps from slipping. A zip front is nice for easy on/off, but make sure the z