Gerbing 12V Heated Sock Liners - The Warming Store
ActionHeat Large Black Heated Insoles - Up to 8+ Hours of Heat - Wireless Remote Control - Rechargeable - Includes Charging Kit in the Footwear department at Lowes.com
Hotwired 12V Heated Inner Sole - RevZilla
GERBING 3-Volt Heated Insole - S/M GER-INS-3V-S-M - The Home Depot
Gerbing 12V Heated Insoles (Previous Generation) - The Warming Store