I take my grandson a glass of “fresh, cold, milk” as he requests every day when I pick him up from school. I tried other disposable cups over the past school years but the milk never stayed cold. We live in the south so you can imagine trying to keep milk cold in late afternoons in warmer months. I place the cup of milk in the freezer for about 20 minutes before I head to car line and when he gets in the car 60-70 minutes later its still, “fresh, cold, milk”! Only time I had an issue with a lid coming off was due to my own fault and how I picked it up. A disposable straw fits perfectly in the lid opening. I have actually rinsed out the cup and lid and reused them a few times without issue. I have used the cups for hot chocolate as well and they keep it hot, sometimes more than I like when I take a sip. ? I highly recommend and have used them for over a year almost daily without any issues. [...]