Built like a tank
"The Zulu was originally just a water bottle I took on the job site, it successfully holds ice for me at least, for around 2-3 days depending on the type of ice you use, today for instance I just had a tray of ice cubes sitting in partial meltwater but they are still frozen even now after work as I decide to write this. I did see that some came with a silicone boot but I never got one from Walmart the 2 times I purchased a mammoth. My main issue with the mammoth is the lid design, as long term use even with regular cleanings, the silicone vent plug can’t be removed as to clean around the mating surfaces of the plug. So I had to replace my bottle with another just for the lid. Replacement part skus would be nice. But in conclusion the jug is definitely worth it if you will regularly deep clean with things like vinegar. Best water jug I have ever found and it’s a sticker magnet. Both me and my wife have a Zulu jug now for work and daily hydration."
