Sport-Tiedje, a German retailer of fitness equipment, has signed a contract with Karstadt Sports for the distribution of its products for the next three years. In 21 Karstadt Sports stores in Germany, Tiedje will introduce its shop-in-shop concept on 60-110 sqm,  with three employees per store. Sport-Tiedje has 45 stores in Europe, 22 in Germany and an online store in 12 different languages with more than 300,000 orders in 2015. It recorded total sales of €97 million last year.