Info
Grangers 30ºC Proofer:
Advanced wash-in formula
enhances breathability and increases durable water and stain repellency to all outdoor fabrics.
To maximise water repellency all waterproof apparel should be tumble dried after washing if the garment instructions allow.
Reviews
Bring your old waterproofs back to life, 10 May 2010
By Phil (Wolverhampton)
I have a North Face Goretex jacket that is over 15 years old. It has been exposed to so much bad weather over the years that it slowly lost is ability to keep out that naughty rain.
Then I discovered this proofer. I gave the jacket a wash with the stuff and it's completely revitalised my jacket!
Genius!
You'll get about three to four washes out of one bottle. Totally worth it.