Nikwax Down Proof is easy to use, safe, high performance wash in waterproofing for down filled clothing and gear. It adds Durable Water Repellency; reducing weight gain, maintaining the insulation and breathability of down filled items in cold and damp conditions.
When your gear is starting to soak up water instead of repelling it then you know it's time to waterproof it again. Combine Nikwax Down Proof with Down Wash Direct to make your gear perform like new. Remember to wash in two separate loads for optimal results.