Feltrosofia's products are all made of different types of pure wool, combed and dyed in various colours, hand treated with hot water and soap. After washing, it is pressed, rolled and kneaded until it becomes the handmade felt that craftsmen then mould into shape. “Levar a Água ao seu Moinho” (“Bring the Water to your Mill”) is the title of the piece Stefanie Köhne contributed to the Água Musa project. In the L4Craft project, the artisan joined Mónica Favério and Sérgio Lopes, mixing wool with glass. For Agricultura Lusitana, she created a set of pieces: Tudo o que eu preciso (All I need), Abrigo (Shelter), Pimentos da Terra (Earth peppers).