Nightvision jacket, can i re-waterproof it?

[Katherine]

Never wash anything waterproof in biological detergent, always use non-bio.

 

[Dogtrousers]

Stay away from biological wash powder, it strips the waterproofing out of anything.

Even waterproof tea towels?

 

[SatNavSaysStraightOn]

Even waterproof tea towels?

they are almost back to normal now...

 

[summerdays]

I've just been rinsing my machine before starting.