You already know. The Good Boy Swim Brief keeps it clean up front and lets the back do the talking. Made to be seen from every angle.Material: 80% Nylon, 20% SpandexFeel: Sleek, stretchy, and built for the water and everything afterDetailing: YH branding on the front left waistband and "Good Boy" across the back, both in an elevated silicone finish with a sleek black drawstringNot sure what size to order? Measure your natural waist and match it to the chart below. Since our swim briefs are made with stretch fabric, sizing is based on body measurements, not garment measurements. If you're between sizes, size up for comfort or down for a snugger fit.U.S. Size Chart Size Waist S 28–30" M 32–34" L 36–38" XL 40–42" XXL 44–46" XXXL 48–50" U.K. Size Chart UK Size Waist S 28–30" M 32–34" L 36–38" XL 40–42" XXL 44–46" XXXL 48–50" International Size Chart (cm) Int'l Size Waist (cm) S 71–76 cm M 81–86 cm L 91–97 cm XL 102–107 cm 2XL 112–117 cm 3XL 122–127 cm