Korkers Plain Felt Sole BlackKorkers Plain Felt Sole is a traditional, high traction interchangeable wading boot sole made from dense compressed felt, delivering excellent grip in very slippery aquatic environments where felt soles are permitted. Material: High density compressed felt (black color) bonded to a durable Korkers compatible base Traction: Outstanding hold on slick, algae covered, smooth, rounded, or slimy river rocks and bottoms; one of the best options for positive