Disregard the TDK unders in the background. I made these unders once before & didn't really like them.

This time, I used better fabric (first try didn't have great recovery), and merged the back/side panels to eliminate the back seams. They went together quickly, fit well, not tight, but not baggy. Definitely a looser fit that most WAHM boxer briefs DS has, but still snug enough to not be falling off. DS is right on for 104s in everything Otto, and these ran true to size on him.