The strongest door stopper in the world – Due to its shape, Doornado gets more grip when the door presses harder against it. As a result, Doornado keeps even the heaviest doors open on the most difficult surfaces. Works on all floors - Doornado's soft, rubbery underside provides traction on all types of floors, from smooth laminate floors to carpet. Sustainable materials – Doornado only uses raw materials from Germany that meet the highest quality standards. Both the hard and soft material is free from harmful phthalates and PAHs and complies with EN 71 (safe for use in toys). Stylish design - Doornado is a 'Dutch-Design' product that is available in 12 different colors, which fit into any interior: from stylish to colorful! Made in Germany – Doornado is produced in high quality by a traditional German family business.