Here's what other sites are saying:
If your Caribou boots are wearing out on the inside, give them new life with the Sorel Caribou 9MM Thermoplus Innerboot for Women. These Sorel boot liners have reinforced seams for durability and stretchy material across the shin so they fit comfortably and keep the cold out. The ThermoPlus Liner features four layers that work together to wick sweat and allow it to evaporate, hold onto your body heat, and prevent; cold air from sneaking in.
- Altrec Outlet