The Aqueous Wax has been discontinued. If you're looking for something new, check out the best footwear cleaners/treatments for 2020.
Appalachian Outdoors says:
Waterproofing Wax for Leather from Nikwax has a sponge top for easy on application. It's a waterproofing treatment for your leather footwear and gear and has a neutral color for a range of application. PRODUCT FEATURES: Waterproofs, maintains support and breathability. Works immediately after treating; will not soften leather Adds water repellency Prolongs life and performance of all smooth leather footwear Maintains breathability Ideal for footwear with breathable linings e.g. Gore-Tex
Historic Range: $0.98-$8.50