Every fighter's harness is based on historical armour from roughly the 13th to 17th centuries, and every piece must pass two gates before it enters the list:
Helmets, neck protection, gauntlets, greaves — every zone has minimum coverage and construction standards checked by marshals before you fight.
BI's Authenticity Committee sets standards for armour, weapons, tabards, textiles and decoration — keeping the sport visually true to its medieval roots.
Swords, axes, falchions and polearms are steel but blunt, with strict edge, weight and flex requirements per the BI weapon chart.
New fighters don't need to buy a thing — AMCF clubs keep loaner armour for training and come-and-try nights.