This is a new warm up jacket, never worn. Likely from the late 70's or early 80's. I'm not really sure of the history of the history but clearly a international travel uniform for the Japan Disc Golf Team. There is no visible size on the jacket. The Brand Asics is a Japanese company and the tag information is mostly all in Japanese. I'd say it's likely a small or a medium by US standards. The jacket has been stored covered in plastic and is very clean in excellent condition.