Your footwear could be soaking up water just because it is dirty. First, try cleaning it with Nikwax Footwear Cleaning Gel™, and if it is fairly new, or recently re-waterproofed, the Durable Water Repellency (DWR) will be revitalized just from cleaning. But, once the footwear has been thoroughly worn you will need to add DWR, using Nikwax Fabric & Leather Proof™, after cleaning first with Nikwax Footwear Cleaning Gel™.
Nikwax Fabric & Leather Proof™ is easy and quick to apply; either spray or sponge on to wet shoes. 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 optimized for fabric and leather combination footwear.