This is a UNIQLO U sheer shirt (long sleeve). The color is 52 GREEN, and the size is XL. I purchased it at a store in February 2021. It's in good condition overall, but as you can see in the 8th photo, there is a slight stain on the back of the right sleeve. I don't think it will be noticeable when worn, but please understand this before purchasing. I have included the official size chart, so please refer to it if you like.