Hotronic S4+ Custom Heat Kit

The culmination of years of experience and research the Hotronic S4+ Custom Heat Kit is a foot warmer designed to focus heat in the feet for comfort and warmth even in the coldest conditions. With enhanced reliability and longevity for the batteries you’re going to love this solution to cold toes! The S Series NiMH batteries offer an increase in capacity for up to 30% in higher average temperatures and longer durations on a single charge. The heating element’s large oval shape and self-adhesive backing provide effective coverage of the toes and easily install in the included Hotronic insoles, or on your own custom insoles. The recharger is designed to go where you go, with global adapters including north American and European plug adapters. The take it with you solution to cold toes this kit can be used in your ski boots, hikers, waders, and work boots. Just trim the insoles to fit, charge up your batteries, and get ready to experience winter in a whole new way.