The following is an excerpt from the official website: -Material- Uses yarn with a refreshing feel and luster. While having a moderate thickness and a firm impression, it is attractive for its smooth touch against the skin. -Design- A track jacket is imagined with a knit material. The luster is characteristic, making it a fresh piece. It is recommended to wear it over shirts or T-shirts, and to layer it under coats or blousons. It is also very useful for adjusting warmth, and can be worn for a long season as a light outerwear in early spring. -Size- Length: Approximately 60.5cm, Shoulder width: Approximately 42.5cm, Body width: Approximately 53cm, Sleeve length: Approximately 60cm