I love to share info about great brands.
I saw this company on the Dragon's Den a couple years ago. Very nice undies for your man - useful for vacations in warm places where they have to walk a lot or even if they are uncomfortable at work (apparently!).

They are a bit more expensive but make nice gifts and are quite helpful. I previously got bamboo ones for my hubby.

http://www.saxxunderwear.com/

THX0612