Ds was obviously uncomfortable when he was riding so I got him some stretchy trunks (quite snug fitting though), the sort that go partly down the leg (like these) and he has been much better. I think his 'bits' were getting pinched by the seams on the edge of his normal pants.
Cycling shorts under his jods? I use made to measure from Goldfinch www.goldfinch-equestrian.co.uk or contact Performance Equestrian both do fab riding tights in a good range of colours. I prefer Goldfinch
Have you tried a different type of saddle? A cub saddle or felt pad is a different shape from a normal saddle and might make a difference. (sorry, I was quite abrupt up thread, I was preoccupied, didnt mean to be offhand)
Hi my mum sells them> They are an make from Italy. The only prob is they are adults only but a XS fits my very skinny 9 DN . If you are interested i can give u the details. I know a lot of the professional dressage male riders have them!!
No idea what they are like on a pony saddle, they do a bang up job on bike saddles small and large. Boy was suffering abit when he rode teh tandem which has an adult saddle, shorts stop him getting rubbed by the edge of his pants leg hole IYSWIM.