Sorel ThermoPlus Extreme Innerboot


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The Sorel ThermoPlus Extreme Innerboot is made specifically for the Alpha Trac Lace and Alpha Trac Buckle boots. Sorel’s most advanced liner with its anatomical fit, provides excellent fit and comfort. Radiantex Thermal reflective membrane provides a solid barrier for protection from the cold and heat retention and a protective outsole provides traction so liner can be used alone as an indoor slipper.


  • Winshield™ tongue design keeps cold air out
  • Slip-resistant
  • Reinforced heel pull for easy removal from boots
  • Advanced four-layer construction
  • Thermal polypropylene transfers moisture away from the foot
  • Breathable Radiante™ thermal reflective membrane keeps body heat in
  • Height 12in

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Sorel ThermoPlus Extreme Innerboot Photo


Available sizes, while supplies last, include size 7, size 8, size 9, size 10, size 11, size 12, size 13, size 14 and size 15: 7, 8, 9, 10, 11, 12, 13, 14, 15.

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