The Iron Flask Rover 2.0 Tumbler brings everything you love from the original Rover and adds a 100% leak-proof design with both the flip lid and straw lid included, plus a rubber bottom for extra protection (and less noise). Every Iron Flask tumbler cup is vacuum-insulated between two walls of the highest-quality stainless steel, giving you durability, reusability, and temperature control you couldn't dream of with a plastic tumbler cup. That is, 20 hours of coldness or 5 hours of hotness for your drink of choice. Double-walled vacuum insulation keeps drinks cold or hot without the tumbler sweating 2 100% leak-proof lids BPA-free non-toxic stainless steel Sleek and functional design Fits most cup holders
