The 5% elastic makes these so great, they don't stretch out after a full day of wearing them like most boxer briefs do; at the end of the day their shape is still a boxer brief and not just limp boxers. The fabric breathes amazingly well, even under pants. Let's just say the first time I wore these it was pretty cold outside and when a good breeze picked up I was a little shocked, it was almost like I was going commando, lol. Not the greatest right now in the dead of winter, but come summer, they will be awesome in helping to avoid swamp crotch in the heat. No fly in the garment, which I don't mind, and the way they cup your junk is pretty nice in the visuals department, if you know what I mean. My boyfriend approves. ;)