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