Hi David,
Thank you for reaching out! Our Item #3262, 8 lb. Wax Coated Kraft SOS Bag (6 1/8" x 4" x 12 3/8"), is coated with paraffin wax, rather than carnauba wax.
Since you mentioned wanting to compost the bags after use, I would recommend checking with your local composting facility before adding them to your compost. Composting requirements can vary by facility, and the paraffin wax coating may affect whether they will accept this type of wax-coated paper bag.