Rieker 03310-00. The black Rieker lace-up shoe has a wide cut and is therefore very comfortable.. The upper material consists of a mix of imitation leather on the toe and heel and genuine leather on the rest of the upper shoe. This ensures durability with high quality materials. The inside of the lace-up is also lined with leather and synthetic. The flexible antistress outsole has a sporty design and is sure to impress with its flexibility and cushioning. Available in full sizes.