I have a rain coat and rump rug made by Heidi Chretien who
has Sharaf’s Closet. She used to be a sponsor on endurance.net but
perhaps she isn’t in business anymore as her website isn’t working,
www.sharafscloset.com . She
uses a waterproof, breathable fabric that is very lightweight and packs well. If
anyone knows if she is still in business she would be worth checking with
regarding the rain coats she makes. I think she lives in Three Forks
Montana.