The main thing I don't like is the sewing lines in the middle and side front area. I wish it was made with no seams in the whole front area. I also don't like mesh (see update). I would prefer a regular soft thick double-layer cotton. This mesh doesn't seem as soft as regular knit thick cotton. I'm glad there is no opening. I won't buy underwear with an opening. The elastic is a little tight for me, but most people would think the elastic is fine. The elastic width is ok, not too wide, which is a problem with some other underwear. The elastic is also covered in cotton. While 5F01201 is not perfect, it's one of the better ones on the market. The pouch seems big and thick (double-layer) enough for me. I wish I could choose the colors. I will probably buy this again, since I don't like anything else out there.

UPDATE: The last few packages of underwear I bought didn't have mesh. They were just nice soft cotton - basically the way I prefer. Perhaps they phased out mesh, or it was just because it was made in a different country. Anyway, nice change - smoother than mesh.