Review on Stay Refreshed on-the-go with Primula Avalanche Thermal Water Bottle, 20 oz, White by Doug Knight

Seems to work on par with my 20 oz Yeti Rambler. The lid mechanism is slightly inferior to the Yeti without a magnetic locking mechanism, but is superior to some other brands that use a folding mechanism. If you tip or turn the Primula upside down with water or coffee in it, the lid will leak about twice as much as the Yeti (around the opening/closure, not the sealed sides which are perfect for both sides). Keeps drinks hot or cold. and the ice seems to be melting at the same rate as the Yeti - no worse, maybe a little better, but not clearly enough to tell for sure). I believe Primula is vacuum sealed and Yeti is not, making freezer storage less safe than Yeti, but I suppose they theoretically have a better temperature barrier? Again, I haven't seen anything conclusive in the one or two lay tests I happened to run. This is a great mug and I love the contoured twist handle. It's a lot rarer to see something like this than a Yeti, but none of them can go wrong!