MuscleMate 2024 S/S Collection. Men's Hot Thong G-String Bikini Underwear. 92% Polyester, 8% Spandex Size Chart: S-(27-29inch Waist), M-(30-32inch Waist), L-(33-35inch Waist), XL-(35-38inch Waist). Reminder: Our Size chart was based on Asian male figure, so we would suggestion you to chooose a size plus when you have a Caucasian figure. Men's Fit Spandex See-Through G-String Underwear. No Visible Lines. Ideal for formal suit, Gym Workout.