This is a long-sleeved BABOLAT tennis t-shirt. The size is XO according to JASPO. JASPO stands for Japan Sporting Goods Association, and according to their standards, XO is for people with a height of 182-188cm and a waist of 87-93cm. It's larger than a Japanese L size, and is equivalent to XL or 2L (3L). It says it's quite large. It's in good condition. The color is gray.