|Our filters are made of manila, cellulose and siegel fibers, guaranteeing true-flavor filtering. They are chlorine free bleached and biodegradable.No glue. The expanding base of the filter provides the tea leaves enough room for their flavor to fully unfold. Instructions for use are available in 4 languages with instructions on the use of the stick located on the back of the poly bag. The poly bag has an euro slot hanger which gives more flexibility to present the product to the customer.