Nikwax Down Proof

Wash-in waterproofing for down filled clothing and gear. Adds water repellency, revives insulation and breathablilty
Easy to use, safe and high performance wash in waterproofing for down filled clothing and gear.  Adds durabale water repellency (DWR) helping to reduce weight gain and maintain the insulation of down filled items in cold and damp conditions.

Down is used to provide lightweight insulation to keep you warm, the structure of down allows air to be trapped between filaments and warmed by body heat to provide insulation for the user.  Once wet, down clumps together causing a loss of loft - losing all its insulation properties as it can't trap air as effectively and water conducts heat away from body 25 times faster than air.  It will also gain weight (with holding more water) and breathablily will be significantly reduced.

Nikwax Down Proof works by applying durable water repellency (DWR) to the outer fabric of your down filled item as well as the down inside.
Brand Nikwax
Weight 0.4kg