I just received a pair of these that I had ordered by US size (14D). However, I was sent a 47. A 47 is a 13-13.5, and I know that. Unfortunately, either the vendor's size charts were wrong, or they weren't paying attention. The box that I received isn't even marked with US or UK sizes, just Euro sizes, so try to order using those sizes, if you know yours. (A size 14 is usually a 48 or 49, most of my shoes are marked 49, if that happens to be you.)

The shoes were comfortable, despite being too short, with a very wide toe box, and really good grip. The leaflet inside listed the sole as 2.5 mm thick, with 4 mm lugs, and that felt about right. Most of the upper looked and felt like neoprene, but the leaflet said it was Dri-Lex, coated with an antimicrobial agent. The tongue was on the short side, barely coming up to the height of the top laces, so if you're the sort that uses every last hole on a shoe to lace up, you might have a bit of trouble with these. I wish these had been the right size, because they otherwise felt very good.