I'm currently studying the whole costume, but the softparts are a struggle.
The undersuit is different on each picture.
On the first one and the second, it looks like the suit is ribbed from the shoulder to the upper part of the forearm. It's sadly really hard to be sure.
On the third ( taken from the serie's propmaker studio), only the chest looks ribbed, the arm is completely smooth.
On the fourth ( taken from the exposition of genuine costumes at the Toy Sapiens store exhibition, thanks Hyuta Nihira !), the suit is ribbed on and from the chest to the elbow.
What I assume is :
- On the third picture, the suit wasn't finished
- On the fourth one, people that assembled the costume didn't fully and properly stretched the suit to the bottom of the arm, you can see that between the biceps and the elbow. They aren't very meticulous since they assembled the belt upside down --'
What do you guys think ?