Gerbing 12V Heated Sock Liners Gear up for ultimate riding comfort with the Gerbing 12V Heated Sock Liners. Engineered to provide exceptional warmth, these liners boast Gerbing's state-of-the-art microwire heating elements, renowned for their robustness and efficiency. When the mercury dips, these sock liners act as your trusted companion, keeping your feet snug and dry. Whether you prefer connecting them to Gerbing pant liners or tapping into your motorcycle battery, these liners are your go-to solution for staying comfortably warm on chilly rides. Note: Customers have found that these sock liners run small and recommend sizing up one full size. Features: Heats both the top and bottom of your foot Microwire heating throughout the sock liner Moisture-wicking stretch Lycra fabric Special long cut pulls over your calf to fit any boot or shoe Hand-washable anti-bacterial-treated material Lifetime warranty on the heating elements Gerbing 12V Sock Liner Power Options: Plugged directly into Gerbing heated pant liners Powered by Battery Harness, Y-Harness, and Temperature Controller (sold separately) Powered by Gerbing Hybrid Battery Packs G1219U-Bat-859-001-00002 (sold separately) Battery Harness, Y-Harness & temperature controller required for stand-alone operation (sold separately) Max Heat: 135 F 12W Each Power: 12V DC 1.0 Amp Each Note: Gerbing recommends the use of a temperature controller with this product. Failure to do so may cause discomfort and burns.