"Ninety-nine percent of rainproof products are woven. Typically, that means synthetics that won't patina like cotton or leather. But as Italian brand called Ten C makes great coats that are actually knits. They're based on the fabric used for convertible-car covers, which needs to be able to stretch. It allows them to get back that worn-in look I really love while remaining waterproof."
-Chris Gibbs, owner of Union, in L.A.
Moral of the story: you need waterproof stuff and you can look right even in the rain!
Side note: Ten C has the anorak, dress jacket, parka, trench and snow smock!