This is a new thing we are trying. 2 minute reviews on commonly used items. If you see one you like, let us know and we will try to do a full review on that product. This video is the Contigo Autoseal. https://www.gocontigo.com/explore-products/mugs/ Which his mug has been used by me and a few of my partners for years on an ambulance and in daily life. The keep your drink in the condition you want it to be whether hot or cold and doesn’t spill all over the place when it’s tipped over!