I'm in the UK, I bought a pair of Kyodan leggins about 2 years ago from TKMaxx and they're my absolute favourite leggins, so I decided it was worth paying the expensive UK delivery fee to buy some more. I am a heavy gym-user, mostly into hard-core yoga.
These shorts did not disappoint me. Incredibly soft fabric, they are not see-through even when stretched, they are super flattering on the belly and the bum. The legs are a good length and do not ride up - yet the elastic at the bottom doesn't feel constrictive at all! (How do they do it?) I wore them during the record-breaking hottest day of the year (40 C) and they still felt breathable. I couldn't recommend these highly enough!