Best flip-top: Miir Travel Tumbler - See at Amazon Pair an easy-clean lid with 5 hours of hot and cold temperature retention and you get the solid performance of the Miir Travel Mug. Best spill ...

MiiR Insulated Travel Tumbler with Locking Flip Lid ($33 at Amazon) We liked the overall design, insulation, and size of the MiiR Insulated Travel Tumbler. However, we found a design flaw with the ...

The lid here functions pretty much the same as the MiiR, which means you can sip from the hole or take the whole thing off. Both make for comfortable sipping. But I will note: While there’s a ...