Rieker Artistress Blue Perforated Leather Tie Sneaker NWOT EU sz 38 (US 7.5) Every single Rieker shoe is made with forward-thinking antistress technology, allowing each step you take to feel as effortless as the last. Our antistress technology is built on four properties - lighter, reflexibility, roomier and shock absorbing. Shipped fast from a non-smoking environment - Items wrapped with care.