Senger use Natural Fibres Only, for both fur and stuffing. This keeps the little insides you're most worried about free of synthetic stuffing too. Most soft toys including the market leading brand (Smelly Hat) use synthetic plush fabrics as well as synthetic fibre or bead fill. Polyester and acrylic are the norm. Even ‘ethical’ soft toy brands, including some who advertise their toys as ‘100% organic cotton’ use polyester fill (naughty!). Senger toys have a certain naive charm about them. These are not the saccharin sweet concoctions of an anonymous marketing team. But loyal companions lovingly brought to life by the imaginations of Volker and Sabine Senger.