This is a great shaker and strong and tough and easy to clean keeps cold for hours and hot for over an hour

Keeps drinks cold, and blends powders etc well. Was using it only for protein initially due to the other review questioning its durability, however as it seemed pretty solid, it’s been used and abused multiple times a day, hot/cold drinks of all types, thrown in bags, vehicles, knocked off desks etc-absolutely no issues after several months. The only thing that is a bit annoying is the slider doesn’t LOOK like it closes fully-still seals and is watertight, but not quite flush with the end of the spout. An absolutely cracking bottle. Worth full price? Debatable, especially as it costs more than a similar sized Yeti, but works well enough for me to not feel like getting one of those…

The shaker itself is good quality and does a great job of keeping cold shakes cold etc.. However, despite the marketing hype, it doesn't do a great job of mixing/blending powders and regularly leaves lumps that I simply don't get with the 'Smartshake' style shakers with the honeycomb mesh inner lid. The most annoying thing however is that the 'rubberised' paint is microns thin and simply starts to flake (then peel) off within a week or two. This is just with handwashing in a sink, never near a dishwasher etc. I certainly wouldn't buy another, even at the 50% Black Friday price I paid.