So my mare dose not coat out in the winter so when the temp low or bad weather threatens she gets a blanket. I'm in the market for a new one but I'm not really sure what weight she will need. It rarely gets below -15F useally stays between 25-0f. She is on full time turn out and I had a light weight canvas on her last year and it worked well but looking for something a bit more durable. Also any suggestions on brands?