They were availible originally only in Japan, but a few select boutiques in the USA had some pairs. Not sure how limited they really are, but I like em. I figured that with them being New Balance they would be a good match for RMC given the brand is promoted heavily in the Seleven shops
Looking real nice man, look like Custom made jobs, nice rainbow colours, ever thought of buying rainbow coloured laces to match cos they are availible! Would look killa man