The Everyday Tumbler comes in just two sizes—20 ounces and 28 ounces—and RTIC doesn’t sell a separate flip-top lid for the 28-ounce size. Runner-up (sipping-port lid): Yeti Rambler Tumbler ...

This 20-ounce glass tumbler is wrapped in a sleeve for protection against breakage but has a window so you can see when it’s time for a refill. It comes with a silicone-sealed bamboo lid and a ...