Lid Replacement for Simple Modern Summit 10 oz 12 oz 14 oz 16 oz 18 oz 20 oz 22 oz 24 oz 32 oz 40 oz 64 oz Water Bottle,Straw Lids With Straw For Hydro Flask,Thermoflask,Takeya, BPA Free,LeakProof c

What happened to the lid? What is your son drinking from the summit? Anyway, It looks like this one would work. They're showing a 22oz summit in the picture, which is the same dimensions as the 32oz summits. https://a.co/d/04xE8WKY You'll be able to see the gunk, but also silicone like the above is hard to clean imo. There are also chug lids, but I'm not sure if you're just after the straw lid? https://a.co/d/0b3RHyeg