It depends on potluck. Some cordovan 'welts' which is when you get bloats when it's wet but others are so waterproof some people even dedicate it for bad weather. I don't think there is a way of telling other than trying. For a bit more waterproofing I've heard that saffire cordovan cream helps. But pretty much everyone here vouch for saffire renovetur when it comes to cordovan care.
10/28/14 at 3:32am