A 200GSM polyester-cotton blend is chosen deliberately lighter than a judo or BJJ gi, since taekwondo's kicking-focused sparring rewards freedom of movement over the collar-grip durability that heavier weaves are built for.
Academies teaching both WTF (Kukkiwon/Olympic-style) and ITF patterns need different cut and collar styles, and we produce both from the same fabric spec so clubs running mixed curricula can order one consistent uniform line.
Wash in cold water and air dry — the lighter 200GSM weave is more prone to shrinkage under high heat than heavier cotton gis, so this matters more here than for BJJ or judo uniforms.