You are able to purchase additional lids both in a spill proof configuration and the open mouth version that comes with the tumblers. You can see in the image below that the thermos on the left has the hotter water, however the heat signature on both Tumblers is only present inside the Tumbler. One of… Continue reading Ozark Trail Clip-in Screen Walls, 10′ x 10′ Straight-Leg Canopy Sold Separately