Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Do these containers keep items hot/ warm?  Looking for something to send cooked sandwiches in ...
Document: I was looking for environmentally safe lunch boxes. From the pictures, these containers seemed larger. I was really surprised when I opened the package and initially thought that Amazon had sent me the "small" version. Since it is too much trouble to send them back, I am going to keep them, but really can't figure out what I can do with them. Very disappointed.
They were purchased for bringing homemade baby foods to my son's daycare. They work well for this purpose, except the lid may not hold tight enough when I put in very hot food. I have to press several times to make sure the lid won't pop out. But you won't have such problem if warm or cold food is contained. Very good containers.
The tops are very hard to get on. And one of the containers in the set came with deep scratches on the inside. They are good size to keep my DD leftovers and portioned food stored in the fridge. She is 16 m old.
I was looking for stainless steel food containers that wouldn't leak in my kids lunches-for things like applesauce or yogurt. These are great. There have not been any problems with leakage and I like that we are using minimal plastic and the lids are made of a safer plastic than others.
These containers are great! I was looking for an alternative to using plastic in my children's lunches. These have worked well for everything from pretzels to cottage cheese. The lids seal tightly so I have not had any leaks. I will definitely be purchasing more! I do put the metal container in the dishwasher but not the plastic lids (after reading another review about how they did not hold up). I would definitely recommend these.
I was looking for an alternative to plastic (for enivonmental reasons) and glass (because I havea  2 year old that likes to fling things) and these were perfect. They are large enough to hold my kids lunches and snacks and they fit nicely in a metal lunchbox. Plus, they even hold liquid without spilling. The tops are a little hard for little hands to get on and off, but it is worth it. I would highly recommend these containers for parents.
I wanted something to replace our plastic containers and these are perfect! It's also a great size for toddlers as I can fit a portion of fruits without crushing them or fill only half with some crackers. Great purchase!
i bought this for my son and he brings it to school everyday.. keeps the food warm.. doesn't spill and its easy open/close
I bought these about 8 months ago and use them in my child's lunch. Here is my review:SIZE:  These are hold a normal adult-size serving of yogurt, applesauce, etc. If you are packing these items for a kid, I'd recommend the smaller containers (with magenta lids) instead. These are the PERFECT size for holding a mini-bagel.LOOK:  These are pleasing containers. The shiny stainless steel has a nice weight to it and appears to be truly stainless.
These are AWESOME!! THey seal well - I send my daughter to school with soups and liquid stuff in them and they don't leak at all. Great to have so you're not putting your child's food in plastic yet they are tough and unbreakable too.
Answer: I wouldn't recommend these for hot items.