Wearable Winter Tech Everyone on Your Shopping List Will Love

Those 10 layers of socks just got an upgrade. With the touch of a button, Thermacell's ($200) Bluetooth-controlled insoles are activated via your smartphone, providing instant warmth in the chilliest conditions. Three different temperature settings are available and you can control it via Bluetooth. These are water-resistant and work for up to five hours before needing a recharge.