Sustainable Products, Projects and Green Design Trempel Cloth Hanger by Viktor Puzur Cloth hangers "Trempel" are made of recycled materials. Cardboard tubes are very good for manufacturing, often this lightweight material is used as a packaging product. Trempel's main idea - is its ease of fabrication and replication of all used feedstocks. The essential idea of hanger's shaping lies in established angle of a cardboard tube cutting.