Roestug is a Dutch company dedicated to circular entrepreneurship, specializing in sustainable bicycle recycling, repairs, and upcycled products. Based in Zwolle, Roestug operates two locations: the Roestug Re-Cycle Centre, which focuses on circular products, workshops, and plastic recycling, and Roestug University, where recycled bicycles can be bought and hired, but also repairs, bike education and social employment are incorporated. At Roestug an abandoned and neglected bike gets a new life, period. The company rescues abandoned bicycles and repurposes them into "Frankenstein Bikes", creatively restored bikes, while also producing sustainable accessories like belts, lamps, and keychains from recycled materials. Additionally, Roestug provides educational workshops on bicycle maintenance, upcycling, and plastic reshaping, promoting sustainability awareness. Roestug is also part of a nationwide initiative that recycles bicycle tires within the Circular Rubber Platform, further contributing to waste reduction and sustainable material reuse. With a strong commitment to reducing waste and giving old materials a new life, Roestug aims to set an example for a greener future by integrating circularity into business and daily life.