Hunter Black Insulated Snow Boots

Hunter boots purchased from Nordstrom Rack. Only worn a couple times, they are too narrow and the inside nylon is detached from the rubber insole. So where the puffy material meets the rubber at the ankle, there is an opening in the liner. Makes it difficult to put on but it could be fixed. The tag says size UK 4 US 5M/6F EU 37. I think they are US size 6.