Nikwax Fabric and Leather Proof is easy and quick to apply; either spray or sponge on to wet boots. Nikwax Fabric & Leather Proof provides highly Durable Water Repellency (DWR) which develops on air drying. It leaves a flexible water repellent treatment on individual fibres of fabric and leather. This allows moisture vapour to pass through, maintaining breathability and keeping your feet dry. Nikwax Fabric & Leather Proof has been specifically designed and optimised for fabric and leather combination footwear. Anyone who is active outside in damp or wet conditions will benefit from breathable waterproof footwear. Whether youre a mountaineer, cyclist, dog walker, or you work outside as a farmer or surveyor, you will need good footwear.