Dardugo Men's 4-Pack 2-Pack Boxer Briefs Classic Cotton Underwear 95% cotton,5% spandex Imported Nice air permeability and excellent sweat absorption.Real boxer briefs with longer length rather than boxer trunks. 4-Pack & 2 Pack Contour pouch with open fly designed,very convenient to use restroom. Expandable soft cotton underwear offers a comfortable wear for daily life and workout. Please note that the tag size is Asia size,you could consider the US size and wasit length in the chart.For example,if you choose a "Tag XL_US Medium",we will send you the underwear with Tag XL on it.Actually,that underwear is for US size medium.