Tumbler Lids Replacement for 40oz Owala Cup, Replacement Spill Proof Splash Resistant Tumbler Lid, Reusable Tumbler Covers for Owala Cup Accessories,BPA-Free (Brown)

Cleaning tip--take the whole lid apart and run it through the dishwasher, then let it dry completely. I always wash it after every use. I don't get mold. You can buy the same lid for both and like the other said, they sell on amazon. https://www.amazon.com/dp/B0F93KYYKQ?lv=shuf&channelId=500&plpRedirect=mhFallback