Charbon sleeveless running wear. Worn once at a half marathon and then washed. The color is black, and the size is men's L (I also wear L size in regular wear). Thank you. From the official website: - This racing-spec sleeveless T-shirt uses dry smooth fabric from a famous fabric manufacturer. With side slits and a front-to-back length difference, it's designed to match both shorts and half tights. The NEW graphic on the front and back is reflective, increasing visibility and motivation during night runs. - Material: 66% Polyester, 31% Lyocell, 3% Polyurethane - Country of Origin: Japan - Shoulder width 42cm, Front length 72cm, Back length 74cm, Body width 53cm