Heat Factory Pro Flex Heated Insoles Small SMALL. Its the best way to keep your feet warm while enjoying the great outdoors. Made with polyurethane insole material the insole will allow you to stay comfortable in your shoes all day. Heated Insoles offer convenient remote operationno worries or external batteriesand at least 2500 hours of use or about four winters of heavy use. Using Heat Factory ProFLEX Outdoor Heated Insoles is easysimply adjust the temperature utilizing the wireless remote control to the setting of your choice: no heat (standby) medium (100F) and high (111F). Specifications for Heat Factory Pro Flex Heated Insoles: Manufacturer: Heat Factory Gender: Unisex Footwear Type: Insoles Features of Heat Factory Pro Flex Heated Insoles Highly flexible performance insole 200000 steps before replacement- twice the industry standard Anti-microbial layer Dual density PU support Rechargeable internal battery (up to 8 hours of use) Wireless control through remote 3 temperature settings Easy-sync button Package Contents: Heat Factory Pro Flex Heated Insoles Two Heated Insoles Remote Control With Battery USB Y-Cable Card Insert With Instruction URL Heat Factory 1470 SMALL: Pro Flex Heated Insoles Small