Nikwax Waterproofing Wax For Leather (Liquid) -

Nikwax Waterproofing Wax for Leather (Liquid):
 - safe product to use on breathable waterproof smooth leather footwear
 - provides Durable Water Repellency (DWR), maintains breathability and replenishes tanning agents
 - non-flammable, contains no harmful solvents and is free of harmful volatile organic compounds (VOCs) and fluorocarbons
 - specifically designed and optimized for smooth leather footwear 
 - WaterBased formulation is directed to leaks, can be used on wet leather, and will not over-soften