That's why it's called a "cosplay" vest, nothing moe though, nor did the robots wear this, but would be a must for Transformer's fans. Just see these pictures if you couldn't recognize it:
well... it's still cool even if you didn't watch the movie.
Black in color, soft plastic plates making it look waaaaaaaaay cooler than original airsoft vests; straps adjustable, so adjust it to fit your size; with 2 hard mag pouches in front; the plate would measure something around 55cm x 40cm, thickness is just about 1 to 2 cm each side.