The sizing chart below is a general guideline. We currently are offering standard Brazilian Jiu Jitsu Gi sizing in A0 - A5 as annotated below. Our kimonos are made from 100% cotton and will shrink 1-3 inches from their initial shipping appearance and wear. However, our kimonos run slightly larger than some Brazilian brands. We recommend that if you are at the bottom of the recommended range limit for a size (e.g. you're 5'7" of average build and looking at buying an A2...you should still fit fine in an A1).