[This review was collected as part of a promotion.] The stainless is of low quality. The bottle will rust if you add electrolytes like LMNT or SALTT. Hydro Flask does stand behind their product and will replace under warranty. I just received my second replacement and going to sell it rather than wait for it to rust. My other stainless bottles have not rusted at all yet.
[This review was collected as part of a promotion.] The bottle doesn't keep water cool for any length of time. Yesterday it lasted about 6 hours and all of that time it was in my office which is air conditioned. It also did not keep the water cold overnight. I have 2 of your other bottles, older models, a 24 oz and a 32 oz, and they perform well. I am quite disappointed, and there is no chat feature on the website, despite an indication that there is one, and my email bounced, so there is no way to contact Hydroflask.
[This review was collected as part of a promotion.] I’ve had the same hydro flask for years. I lost it and bought this one. The lid leaks unless you twist it as hard as humanly possible