SmartWool Men's Ltweight Wind Boxer Brief, Black size L 100% Wool Men's sizes: Small = 29-31" waist 36-38" hip. Medium = 32-34" waist 39-41" hip. Large = 35-37" waist 42-44" hip. X-Large = 38-40" waist 45-48" hip. XX-Large = 41-44" waist 49-51" hip. Wind resistant front panel (1 CFM Rating). Mid rise, sits at the high hip. 100% merino wool. Jersey and rib knit, UPF 38 Flatlock internal seams for exceptional comfort and smoothness. Smooth embossed logo elastic waistband.