Amazon.com | Wool Felt Replacement Boot Liners: 75% Wool, Navy Blue (826 BB) - Standard Boot (Approx 10” high), Size 8 | Snow Boots
Replacement liner for après-ski Sorel Yoot Pac ThermoPlus - Alpinstore
Amazon.com: The Felt Store Replacement Boot Liners: Wool Blend, Polypropylene, Radiantex™ (816 GWR) - Standard Boot (approx 10” high), Size 6 : Clothing, Shoes & Jewelry
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. : r/BuyItForLife