San Japan: costume, prop and weapon rules

Last checked against the con's own rules on 2026-10-21.

A quick-reference guide to San Japan's costume, prop and weapon check rules for first-time convention attendees.

San Japan requires every cosplay prop to go through Prop Check before you enter the convention floor, no matter how small or simple the item is. Skipping that step puts your attendance at risk, and if staff find that you have removed the Prop Check marker from a prop, your badge can be revoked without a refund. Rules are reviewed and updated each year, so treat the official policy page at san-japan.org as the final word and check it before you pack. On weapons, the rules are firm: no metal blades of any kind are allowed, with no exceptions for dull edges, sheaths, or coverings. That applies to swords, knives and axes, and a lightsaber can't have metal above the hilt. Prop firearms need a closed barrel with a visible orange tip, and orange tape or paint does not count. Airsoft and paintball props must be demonstrably trigger-disabled, and firing anything at all, including water or bubbles, is not permitted. Arrows must have metal tips removed, bows cannot be fully strung taut, and bats must be foam or hollow lightweight plastic. San Antonio Police may remove any firearm prop they consider too realistic. Oversized props are welcome with no stated height or size limit, but they cannot be made of solid metal, must be carried upright in shared spaces, and may only be swung in designated photo areas. Metal spikes may not extend more than two inches. Wings must be collapsible or removable, costumes with limited visibility require a handler, and staff may ask you to remove stilts if they become a tripping hazard. Power tools, glass items, real food props, selfie sticks longer than twelve inches, and uniforms that could be mistaken for police or medical personnel are all prohibited. On safety: many prop materials — resins, paints, adhesives, and heat-forming plastics — produce fumes or require sharp tools during construction. Work in a well-ventilated space, wear appropriate eye protection and gloves, and follow the instructions on every product you use. Younger makers should have an adult present whenever heat tools, blades, or chemical products are involved. At the convention itself, keep props secure, be aware of the space around you, and follow any additional guidance from San Japan staff on the day.

Full details at San Japan →