250ml Bottle with trigger spray. StormProof is a high tech reproofing agent for use on all fabrics types and leather. Perfect for breathable fabrics, Gortex® and regular rip stop nylon. It even works well on fleeces and woollens.
First time I've tried this waterproofing and it's excellent. Easy to apply and simple to use. Used on cotton, tweed and wool works great on all of them