Great shirt, great seller. wanted, including thumb holes. I ordered a very large because I wanted to wear it over a tank top or t-shirt after sunset on warmer days and it fits perfectly. I would say it is true to size. After I placed my order, the estimated delivery date has changed. When I contacted the seller about this, they responded quickly and shipped my order almost immediately. The shirt arrived a few days before the originally expected delivery date. Definitely 5 stars for the shirt and the seller.