What does J mean in Crocs?
Chloe Ramirez
Updated on March 21, 2026
To help womens products have "W" before the size E.g W6, Mens have a "M" E.g M9, Kids have a C or J E.g C6 or J3 and finally Unisex items have both "M" and "W" E.g M6 W8. Then use the chart below to help find which gender you need then find the correct UK size from the US size on the bottom of the shoe.