I've trained in martial arts since I was four years old. I have my black belt in Taekwondo, Tangsoodo, and GongKwon Yusul and currently my green belt in Shotokan. I used to compete a lot, primarily in sparring but I used to do poomsae as well. However, the last time I competed was the first time I saw sport poomsae uniforms. I wanna get back into competing. At least locally but I'm wondering what's different about sport poomse uniforms? How do they help? And why are they used as opposed to normal V-necks. *Also a side note, new to the forum...am i able to change the rank it has on the left under my name?