This track jacket is anアレンジ (arrangement) of a military training jacket, made with nylon material and adapted for everyday wear. Reflector tape is a key design element. I purchased this new on Mercari and have worn it approximately 10-20 times. Shoulder Width / Body Width / Sleeve Length / Length Body Width: 81cm Length: 77cm Color: Black系 (Black-based) Material: Nylon Stains, tears, odors, etc.: None