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ThermaCELL Heated Insole Size Chart
Heated Insole Size

Fits Men's Shoe Size

Fits Women's Shoe Size

Small 3.5 to 5 4.5 to 6
Medium 5.5 to 7 6.5 to 8
Large 7.5 to 9 8.5 to 10
X-Large 9.5 to 11 10.5 to 12
XX-Large 11.5 to 13 12.5 to 14