No-gi only: rashguard + shorts (no boards shorts, no pockets); Rashguard must cover torso; no zippers; Mouthguard recommended; protective cup permitted (men); women: chest guard optional
Why people argue about this
People often assume that submission grappling (ADCC) requires gi equipment for safety reasons, forgetting that ADCC can be practiced no-gi where key pieces like rashguards and shorts are mandatory, but with specific color restrictions that differ from gi practices. This leads to misunderstandings about what is required in terms of attire.