Weible Knet Glitter Clay. Set of 5 different colors of glitter clay. Packed as a roll in foil. 5 large rolls of clay (200 grams). Weible Knet has been a high-quality, natural quality product from Germany for more than 100 years. It has the property of not drying out and will therefore not harden. The clay can therefore be used for years without any problems. The product is 100% natural and gluten-free, so there is no risk to children associated with this clay. Weible Knet is made from potato starch and beeswax, the dyes come from the food industry, so the clay is colored exclusively with natural dyes. Weible Knet is the best choice for your child / children.