Adidas judo gis are measured in European sizes that need to be converted from inches to centimeters. We have done that for you in the chart below. If you are uncertain of your exact size we recommend going a size larger. Some models such as the J690 Quest and Champion 3 are available in half sizes.
For instance, if I'm 68" inches tall that's 172.5 centimeters. We suggest rounding up to the next size to account for shrinkage from washing. In this case, I would a size 175 judogi.