Help with travel cup keep warm

[Anotherdayanotherbattle]

I'm looking for a travel cup for my children. That will keep drinks warm/hot on the cold morning school run whilst we are freezing our arses of waiting for buses. I have to buy 4 and money is a little short so I want to try and get them cheaply. Oh also need them to have a straw or spout .

My dc had these thermos ones. As they are for children specifically they don't say that they keep drinks warm as you can imagine people suing if their kids burn themselves.

My 'kids' are 18 and 21 now but the youngest still uses hers to take hot chocolate to her sport every week so they last! The pictures have gone through. Which is probably for the best in her case.

Can the older ones drink from an insulated coffee cup without a straw? They are definitely cheaper.

YETI are fab for keeping things warm / cold for long periods.

If budget is more important - I'd go to tkmaxx or homesense, they always have lots of insulated thermos coffee cups for really good prices.