• Hotronic Power Plus S4 Universal Foot Warmer Heated Insole Kit.

Hotronic's Footwarmer S4 Universal boot warmers give a boost of warmth to ski boots, snow boots, work boots or even a regular pair of sneakers. You can cut the Heat Ready insole to fit any footwear and the Heating Elements stick to the toes or heels for warmth where you need it most. The battery packs provide almost an entire day's worth of warmth. Self-adhesive covers and strips make the setup easy and quick so you can maintain toasty toes all winter long. Included with Hotronic S4 Universal Heating System: 2 Battery Packs S4 with Integrated Heat Regulator 1 Pair of Heating Elements with Self-Adhesive Fabric Covers and Strips 1 Pair of Hotronic One Size Heat Ready Insoles 1 Wall Charger (global input 100-240VAC, 50/60Hz) with North American and European Plug Adapters Operating Instructions and Warranty Card. The Hotronic S Series offer more versatility and higher performance than ever before. With enhanced reliability and longevity, the new S Series batteries maintain up to 55% of a full charge and 95% of their initial capacity after four years of non- use! Plus, an increase in capacity offers up to a combined 30% in higher average temperatures and longer duration on a single full charge, all when needed most, in the cold. With four (4) cells in each Battery Pack, the Power Plus S4 is Hotronic's most powerful, longest lasting Foot Warmer! HOTRONIC FOOTWARMING SYSTEM Easily installs in all types of footwear. Transfers simply from one pair of footwear to another. Use while skiing, snowboarding, bicycling, horseback riding, fishing, and during other general cold-temperature activities. HOTRONIC’S BATTERY PACK S4 Powered by high capacity, cold temperature operation, NiMH cells. Four (4) temperature-duration settings. Settings adjusted by easy to use, push-button controls. Easy to read Battery Pack LEDs indicate setting selected and power on / off. Battery Packs easily attach to secure area of footwear. Battery Packs S4 contain four (4) cells for extende