Keep your Therm-ic socks nice cozy for up to 8 hours. Snapping easily into the cuffs of Therm-ic’s heated socks, S-Pack 700 rechargeable battery offers 3 different temperature settings and simple 1-button control. With a slim profile, lighter design, and no Bluetooth, these battery packs are great for your fast and light, phone-free outings.
- 3 temperature settings adjust with the touch of a button
- Lightweight lithium-ion batteries last for up to 8 hours
- Battery packs attach snaps to the cuffs, where they are out of the way of boot tops
- Includes 2 batteries and a USB charger that can charge both batteries at once
