Is It period Garb? "Link Tunic"

So this is my son's favorite garb. I orignaly made this as a halloween costume. It is based off of his favorite hero, Link's, dress in twilight princess. (Zelda game) It is a tunic with half sleeves, It does have shoulder caps, It has leather ties to close the front, and decorative ties on the sleeves. The fabric is felt (synthetic). The under shirt is also a simple tunic, made of a woven cotton in brown and gold in a small zig zag pattern.

So what is period about it? The cut of both tunics, the under shirt, leather ties. So what is not period about it? Synthetic felt, shoulder caps, decorative ties on the sleaves.