Blue sweatshirt with a Demon Slayer design, size 150. - Brand: GU - Model Name: Demon Slayer - Color: Blue - Size: 150 - Material: 63% cotton, 37% polyester New with tags. There's a slight whiteish? yellowish? mark near the left collarbone. It's unclear if it's discoloration or a stain. It's not very noticeable, but you can see it if you look closely.