Felt soles wear out and that's why Caddis has created their most durable Felt-Sole Replacement Kit ever. Not only do they deliver great traction on slick rocks and river bottoms, they're made of high-density polyester felt. Kit includes two universal felt soles (one pair) a brush and a 2-oz. tube of adhesive. Adhesive does not adhere to PVC boot bottoms. One size fits most. Imported. Handcrafted in USA.