I had many Winter Coats and Sweaters. The key word is MANY. I got some Coats from Horsewear Ireland the makers of the Rambo Rugs for Horses. She would start chewing it as soon as I got it on her. I still have her Sweater because even though she chewed it she did not totally destroy it. Sweaters are best in my experience because they are easier to get on and harder for them to be destroyed. My Dog had no use for Rain or Snow. She refused to go out in bad weather so I would pick her up and take her outside and hold an umbrella over her.
The worst thing is that her little feet were frozen even though I bought her lined Boots. She let me put them on her and she could not get them off but it took about 20 minutes to get ready to go outside in Winter!
Good luck and do not spend a lot of money because it will most likely be destroyed. I got my money back from Horsewear Ireland because they state that their Rugs are indestructible. That is false because I have several Rugs from my Horses that were destroyed.