This is the Borussia Dortmund 2013-14 Champions League Home shirt by Puma.
The shirt, which is designed to be worn with the shorts and socks from the Home kit, will be the style carried in the Champions League group stage games with Olympique de Marseille, Arsenal and Napoli - assuming Dortmund are not required to change - and then further into the tournament should the German side progress.
Creative Football T-Shirts at Footytees.com - Featuring prints by a range of talented artists
Featuring far more black than the domestic version, certain shirt details also light up under floodlights - used in the midweek European evening fixtures - and this variation also includes a collar, though otherwise bears similarities to the Bundesliga model.
Thanks to Andre