this post was submitted on 19 Jan 2026
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FYI, Zojirushi vacuum-insulated bottles are not dishwasher safe.
Source: Zojirushi.
I’ve noticed very few (if any) vacuum bottles are actually dishwasher safe.
Some Zojirishi bottles contain a nonstick film on the inside of their travel mugs. Some are pure stainless steel but cost more.
I wonder if that statement about them not being dishwasher safe is for the former. I bet the stainless steel options are dishwasher safe.
https://www.zojirushi.com/blog/design-explained-our-slicksteel-interiors-and-nonstick-coatings/
My CamelBak is. From looking at them on this page, KleanKanteen advertises it too.
Yep, they do say this, but i think a big part of the concern is the finish/pattern on the outside of the bottle, which I don’t care about (and honestly 15 years of use has damaged mine much more than any scuffing from washing)
Personally I won’t buy or keep a kitchen product if it can’t make it through the dishwasher. So while it might be my particular bottle’s survivor bias speaking, it hasn’t been a problem. Do keep the plastic bits on the top rack tho.
I think it’s more because it breaks the vacuum seal. Then water can get trapped in there and can burn you if it leaks out.