I have no clue if the Zoic Black Market pants are available outside USA or if they would fit. You would have to ask them those questions.
http://www.zoic.com/blackmarketconvertibleIt appears that their sizing information is specific to inseam length, not waist.
Now only available in black. They used to also be available in tan (khaki) but my Brooks honey colored saddle stained them so maybe that is why now only in black. I no longer wear the tan ones on leather saddles, only the black ones, I have both colors.
I wore these (in black) for a month long tour last year, worked great. I could start the day in long pants, in mid morning when it got warmer switch to shorts. My only complaint was that there were no ankle zippers, so I had to take my shoes off to take the lower leg parts off. I liked the pockets for touring.
I am about 34 waist, so I can't advise on sizing.
After a month of use, I found that the shorts were slightly lighter color from the sun than the lower leg parts, but you almost had to look at them to notice that.