3-D anatomical shape for better grip, high-quality insole material for an ideal foot climate, EVA foam construction, works with all Therm-ic battery packs.

Akkuset Thermic Smart pack is suitable for all Thermic soles and boots with thermic inside, ultralight lithium-ion batteries providing warmth for up to 18 hours, 3 heat levels can be set at the push of a button, impulse control stimulates the blood circulation, standard charge with automatic charging function, extremely short charging time.