Boot-Gard Water & Stain Repellent The Newest technology - A Fluorinated Polymer! Effectively protects all suede, roughout, nubuck and smooth leathers from water and oil based stains. Coats the fibers of the leather allowing it to be water and stain repellent while still maintaining breathability. Formulated to minimize the damage caused from barnyard acids by retarding the absorption of acids without impeding breathability. Safe formula for both new and old items. Retreat the item periodically to renew water and stain repellency. Shipment via air not available.