Zappos.com is proud to offer the Nikwax - Polar Proof (1000 ml) (N/A) - Accessories: Nikwax Polar Proof solution is a wash-in waterproofing treatment for fleece, wool, fibre-pile and synthetic ski wear. ; Helps maintain the air gap between the knit and weave, keeping the wearer warm and comfortable while repelling water from the surface i...