This is a carbon felt specifically for Dear Pet's "Footprint Incense Holder" and "Horizontal Incense Holder." I am selling these because I accidentally purchased the wrong size. It is a set of 4 bags, with 5 pieces in each bag, for a total of 20 pieces. *I opened one bag and realized the size was incorrect after setting it in the incense holder, but they are unused.* *I am not accepting individual price reductions or requests for price reductions. (Due to packaging costs, shipping fees, transportation costs, etc.)* *For those purchasing multiple items (other items I have listed), I will offer a discount, so please leave a comment.*