Slightly larger capacity than the typical crinkly-plastic bottles of water, none of the photos show whether there’s a provision for a belt clip or pack hanger, no holster. Not an outrageously good or bad deal on the face of it, but for me, not particularly interesting. I’m a bit curious about the “triple insulated” thing; generally, vacuum is adequate, and anything else is window dressing. But since I’m not planning to buy anyway, it’s moot for me.
YMMV; you do you.
@werehatrack The third layer reduces the rate of radiation loss across the vacuum. By definition, an ideal blackbody has an emissivity of 1.00. Stainless steel has an emissivity of 0.59, whereas polished copper or aluminum have emissivities of 0.05.
Alas, the majority of the heat loss for most vacuum insulated containers is through the lid. So the layer of polished copper helps, but it only matters if the lid is also very good.
What’s Included?
Warranty
90 days
Estimated Delivery
Friday, Aug 29 - Tuesday, Sep 2
Slightly larger capacity than the typical crinkly-plastic bottles of water, none of the photos show whether there’s a provision for a belt clip or pack hanger, no holster. Not an outrageously good or bad deal on the face of it, but for me, not particularly interesting. I’m a bit curious about the “triple insulated” thing; generally, vacuum is adequate, and anything else is window dressing. But since I’m not planning to buy anyway, it’s moot for me.
YMMV; you do you.
@werehatrack The third layer reduces the rate of radiation loss across the vacuum. By definition, an ideal blackbody has an emissivity of 1.00. Stainless steel has an emissivity of 0.59, whereas polished copper or aluminum have emissivities of 0.05.
Alas, the majority of the heat loss for most vacuum insulated containers is through the lid. So the layer of polished copper helps, but it only matters if the lid is also very good.
I learned all of this from https://www.bottlepro.net/hydration-blog/how-triple-wall-bottles-work-and-are-they-worth-the-hype-insulation-test-vs-dual-walls
The original Thermos brand bottles of long ago were made of aluminized glass. They worked really well, but if they broke they sprayed shards of glass.
@hamjudo @werehatrack
I remember those days. Old lunchbox with matching thermos…