This is a band collar shirt from holk, made of 100% polyester. I've worn it twice, and the size is 1. Length: 79cm Shoulder width: 48cm Sleeve length: 58cm Width: 66cm I bought it at Bshop for around 18,000 yen. It's great because it doesn't wrinkle at all and is very comfortable to wear. The quality is as expected from a made-in-Japan product. Available for immediate purchase.