1， for the cold: with the use of two or more blue ice， cold storage time extended to 10-16 hours (Note: must first frozen food， cold time and ambient temperature and methods of use)

2， for holding: holding time is generally 2-5 hours (depending on the temperature to be around， it is recommended to use a stainless steel container and wrapped with a cloth， to extend the holding time)， but in the high-temperature storage of items wrapped with a cloth， to avoid scorch in high temperature items. Also suitable for winter insulation required.

size:23*18*20cm
8L
You can also charge USB insulation