Avoid raisin-toe! Nikwax Fabric and Leather Proof creates a Durable Water Repellency (DWR) to your shoes or boots, which could mean a few more miles before your socks get wet and ruin your day. Suitable for leather and fabric footwear, you just spray it on wet shoes and let them dry: it penetrates to the individual fibers of the material, leaving a flexible and long-lasting layer that'll breathe as it repels water.