Size chart STYX - MEN BOXERS / BRIEFS WAIST CIRCUMFERENCE SIZE (CM) UNSTRETCHED CONDITION (CM) S 70-80 34.5 M 80-90 36 L 90-100 37.5 XL 100-110 40 XXL 110-120 42 3XL 120-130 45.5 4XL 130-140 47 5XL 140-150 49.5