The Therm-ic Supermax Powerpack Foot Warming System works with boots and insoles pre-wired with Therm-ic heating elements to keep your feet comfortable and warm up to 18 hours for a wide variety of cold weather activities. The rechargeable Supermax battery technology the packs have 3 heat settings for individual temperature regulation for comfortable warmth.
This set includes a pair of Supermax battery packs and a charger with automated charge function for worldwide use.
