Portable Reusable Hand Warmers

Features:
Portable hand warmer, provide with protecting of short circuit and over loading, etc.
25-55℃ temperature setting to keep you warm in winter.
Built-in rechargeable 10000mAh batterys can also be used as a power-bank.
Long lasting time, able to charge for 3-4 times for your smartphone.
Compact and anti-skid, perfectly fit into your pocket or bag while on-the-go.
Suitable for fishing, hiking, skiing, camping, travel and more.