The same has happened to mine and I plan on buying a new one in the spring (it should last the winter). I am planning on waterproofing it the old fashioned way using a recipe I found on here (
link) that is basically a wax that you melt in similar to waterproofing an old Barbour. Having done some research into it a lot of old fashioned wax recipes similar to this, especially the American/Canadian ones include pine tar in the recipe, I am still trying to work out what this adds and if it is worth it. But that is my plan to see if it last any longer than the modern treatments.