Attach some Hotronic heat elements and battery packs to these semi-custom boot warmers and enjoy hours of warm feet when skiing, snowboarding or snowshoeing. These extra large insoles can be trimmed down to fit feet between 10-12.5 (US Men's) and fit into any shoe, not just boots. Made with comfort in mind, these insoles have ample arch support and keep the heat right where you need it the most, under the ball of the foot. These heat ready insoles are intended to be used with Hotronic batteries and heating elements.
- Semi-custom insoles can be trimmed for a perfect fit
- For use with Hotronic heat elements and battery packs
- Size Extra Large: 29-30.5 (US Women's 12 , US Men's 10-12.5)