I've been trying to find details on the kit weight, the arms look essentially the same as the regular riot pads that are issued. But they have extra bits of kit too like modified weighty boots and the shin guards look different.  Also guess the gender has caught you out. That's femayo.  Plus they specifically use shire horses bred to handle the extra weight and riot activity, I don't know whether the 20% applies. These horses are absolute powerhouses but it still looked like too much to my laymans eye. I should have got a snap of one of its colleagues for comparison.