I try today by myself. Just finished the rice. It's really cold already. The one for my daughter 0.8L is OK. But it's only warm (can't say hot). But the big one for my son , he write on his Weekly Report this week is : I'm unhappy because I eat the cold food all the week from my lunch box). I feel so sad about this. Thats why I try myself in this morning. May be I'm so unlucky that I bought the bad one.
So any idea for me to buy another brand hot bottle for the lunch. **URGENT**