The Loverboy Thong - Teal is a high quality men's thong. This non-binding, ultra-soft jock provides breathability with the Lenzing modal, cotton blend fabric. SMALL = 27-29” waist MEDIUM = 34-33” waist LARGE = 35-37” waist X-LARGE = 39-41” waist XX-LARGE = 43-45” waist Note: if waist measurement falls in between sizing, recommend to size up (ex: 34” waist = large)