GX3 makes some really fun undies. This picture features the POP SPORTS MICRO CROSS JOCKSTRAP. Before you order check the sizing because they are smaller than traditional US sizing.
GX3 is a brand out of Japan that has caught my eye. they have some cuts that I really love. However the down side is the sizing chart:
S size 26.5-29.5 cm
M size 28-31 cm
L size 29.5-32.5 cm
XL size 31-34 cm
XXL size 33-36 cm
What is considered a medium in the US is is an XL I believe that the listings should be inches and not cm.