Hotronic Footwarmer

Easily installs in all types of footwear. Use while skiing, snowboarding, hiking, bicycling, horseback riding, fishing, and during other general cold-temperature activities. OKAPED Pedorthitsts can add foot warmers to your custom orthotics as well. The rechargeable batteries last for 19 hrs on the low setting, up to 6 hours on medium and if you need a high heat, hotronics can run on high for up to 4 hours.