These are the synthetic athletic undershorts Ive been seeking. Synthetic is preferable if you're going to be wearing them for multiple days, e.g., when on a hiking/camping trip. Otherwise Im very happy with the cotton Champion undershorts from Costco. Ive tried synthetic undershorts by Under Armour, ExOfficio, and Duluth Trading Company, and the Adidas are the best for me, hands down. The others were either too tight on the legs or had to be pulled up to my belly button to be supportive, or both.