Sport Chief Heated Socks. Black and red.
- 30% merino wool
- 70% polyester
- Machine washable (of course, without the batteries!)
- Dry flat
- includes 2 rechargeable lithium batteries
For the battery :
- 3 modes (low / medium / high)
- Maximum capacity of 8h at low mode and 4h at high intensity
- LI/ion battery