Overall, it is of good quality like all products of this company. It doesn't smell, it doesn't fade, it doesn't leak. The only negative is its closure. Overall, the summit cap is superior to the jannu. The jannu, after a short use, does not close properly. Yes, it doesn't leak, but it doesn't close all the way.

I give it 4 stars only because it is plastic and not used as a thermos. It doesn't leak and mainly the straw snaps in so it's not exposed.