Description About this item Temperature Control: With an intuitive app on your smartphone, you can easily adjust the temperature from 86°F to 158°F and the timer for up to 120 minutes to personalize your heating preferences. It can also be controlled manually via the battery compartment button Long-Lasting Battery: The heated insoles are powered by a 5,000mAh rechargeable battery that will keep you warm for up to 11 hours on the low setting and 4 hours on the high setting on a single full charge, so you don’t have to worry about running out of power External Battery Design: Compared to the traditional insole with built-in battery, our heated insole adopts external battery design, which reduces the bulky weight of the shoes, your feet remain comfortable, open the elastic band to fix the battery on the calf, extremely convenient to use Universal size: Heated insoles can be cut to fit a variety of shoe sizes for men and women, the cut size is determined by the dotted line on the insole Wide range of uses: Great for hunting, skiing, camping, horseback riding, snowmobiling or any cold weather activity where you need to warm your feet
