Bond Eye Rio 雙面三角褲 - 馬丁尼色 / 黑色

That wide elastic side strap keeps everything in place perfectly, and the nylon-spandex blend has a nice smooth feel against the skin. I've already worn it to the gym and it stayed put during squats and lunges.

The reversible design is such a smart touch—I wore the martini side one day and flipped to black the next. The wide side straps feel secure without digging in, and the nylon-spandex blend moves well during laps.

Finally a swim brief that actually stays put after diving in. The wide strap on the sides makes a real difference in how secure it feels. Really glad I picked this reversible style.