I am a big guy who works outdoors most of the time. I really hate it when i sweat and my legs chafe. I tried hanes boxer briefs, they worked great for a while but after a couple washes they got stretched out and old looking. They also claim to have designed them with "no ride up" but that wasn't so.  I moved to fruit of the loom and it was the same story. i decided to try something else and i found the jockey midway.
The material is a sort of spandex/polyester?, really stretchy and soft! The "H" design for the pouch is nice too; side pouches stretch horizontally and don't support the "guys". I'm 6 feet tall and these are long enough to reach about 3 inches above my knees, so no chafing, no ride up; which makes it really good to keep on for those long days out. It also wicks moisture/sweat like a chamois. You may think when u are sweating it is wet, but it u remove them your skin is dry.
This is a keeper!
5 stars (unless something better comes along)