Selling because my child has outgrown it. 【Size】S ・Length: Approximately 63cm ・Width (underarm): Approximately 51cm ※Measured flat 【Material】Polyester, Polyurethane ※Thin material with polyurethane, so it's soft and stretchy. There's a pocket with a zipper on the back, which is convenient for storing small items or valuables when running. There are no noticeable stains, but please understand that this is a used item. If you're interested, please consider it. Sleeve Length: Long sleeve Color: Black