Blue NISHI TRACK & FIELD shirt, size M, coolcore material* - Brand: NISHI - Model Name: NO LIMIT - Color: Blue - Design: TRACK & FIELD - Size: M - Material: coolcore *COOLCORE (Coolcore) Models equipped with this technology and models using the proprietary material "Micro Alpha" are available, offering excellent sweat absorption and quick drying. In particular, coolcore material utilizes moisture (sweat) for evaporative cooling, which helps to suppress body temperature rise during sports. Thank you for looking.