I plan to list this item long-term and will raise the price on Sunday. Until then, I will be offering discounts such as time sales as much as possible, so I would appreciate it if you would consider purchasing. The brand name and material information are not available because the tag is damaged. This type of collar is commonly seen in sports like soccer and rugby, but it's not very common in recent years and is recognized as a classic collar style. The red body has a fine waffle knit structure, featuring firm elasticity and a beautiful knit surface. The collar and cuffs are a light beige rib knit. The condition is not bad, so I think those who are not averse to used clothing will be able to wear it without any problems. Below is the size chart: Size: No marking (Equivalent to Japanese men's M, women's F size) Shoulder width 46cm Body width 48cm Length 75cm Sleeve length 65cm Cuff width 9cm Armhole 23cm If you have any questions, such as needing additional photos or clarification on the description, please feel free to ask. I am also open to price negotiations.