Sorel winter boots bought 31 years ago and they still get regular winter use. I replaced the liners three times over the years and had one rubber fix that I recall. :
Sorel Women's Caribou Felt Liner - Moosejaw
Sorel Boot Liners - Information & Purchasing Options
Sorel Shoes | Sorel Mens Caribou Ii Boot Liners 9mm Sz1 | Poshmark
My fiancé's snow boots just gave out and I finally found the perfect replacements. New in the box too! Vintage Sorel Caribou boots (the goodies, made in Canada) : r/BuyItForLife