IKMF competition rule. Athlete Classification category.
IKMF Games kettlebell weights: Men use 40kg (single KB) or 2x24kg (double KB). Women use 28kg (single KB) or 2x16kg (double KB). These are significantly heavier than marathon weights because the set duration is only 10 minutes.
See the interactive comparison on KETTLEBELL MONSTER™ for filterable views and more detail.