16-Ounce Coffee Flask with Flex Sip™ Lid

This Hydroflask does not keep liquid hot. You can feel the heat through the outside when holding. This item is defective.

Great for coffee in the morning and cold drinks in the afternoon.

The red seal inside gets a hard black mold buildup that can not be removed (I have tried it all) and you have to buy the whole lid which is as much as the whole thing. Such a waste to throw out everything rather than replace the red seal. Great thermal mug other than that.

[This review was collected as part of a promotion.] The 16oz size is equal to my 3 cups of coffee. In the morning is perfect for me while driving my kid to school or whenever I need to run errands. The flex sip is actually works for me to drink coffee even though once in a while have a little drip after I sip it. I guess it’s normal just like to go cup. As usual, hydroflask bottle can keep my coffee warm until I finish my coffee. To be fair, I can finish it in 1 hour. So it still perfectly acceptable for me. Love the personalized engraving.

[This review was collected as part of a promotion.] Our kids love taking hot drinks to early morning classes and having a sealed, but easy to drink from cup. They fit perfectly into the drink holders on the sides of their backpack.

I prefer hydroflask over other brands as they have curtailed using lead in the vacuum. But I want a lid that is covered so when I put it in my pack or brush up against anything it doesn’t contaminate the drinking source. Please make a lid like