That is a nice product at the winter to keep the body warm.
Specification:
- Max temperature: 63 degree celsius
average temperature: 53 degree celsius
Time: Last to 12 hours
Size: 13.3 x 10.0 cm
I think product is nice to stargazer at winter, to keep the body temperature.
In the mean time, I will tie it on the scope to keep away the moisture.
HK$ 5/ bag
HK$ 10 / 3 bags