Mares X-stream size

[Maria09]

Hi.

I am interested in the Mares X-stream but am unsure regarding size.

I use a Mares 5mm boot size XXS and generally use shoesize 36 EU (3 UK/6 US). According to the size charts I can find online I should then use XS in the fin, but find that most places have size S as the smallest.

Does anybody have any experience with the X-stream and how big/small the sizes are?

Thanks