Karate uniforms (gi) to get you started and keep you going. Lightweight Gi Sizes range from Kids 00 to Adult 8. Heavyweight Gi Sizes range from Kids 2 to Adult 7. Heavyweight Brushed Cotton Gi (not shown) Sizes from Child 3 to Adult 6. Seido Patches A required part of the Seido uniform. $21.00 © 2005 World Seido Karate Organization.