Works great!! A lot of people including myself were wondering about the inner pot because it was never stated anywhere what it is made of. Some searches through question and answers showed one reply that it is food grade stainless steel. It does feel like stainless steel because of the weight, but I really rather the company shows it on their site or on the box, for that minus one star.
I've enjoyed my lunch crockpots! I make extra food for dinner so that I'll have it for lunch the next day. I put my leftovers right into the stainless steel container and stick it in the fridge. It makes it so easy in the morning. I just pop the tin into the lunch crockpot and take it to work with me. I love having a few extra minutes to eat my lunch since it's already warm for me and it's heated nice and evenly!