Nalgene Sleeve Insulated, 1 L (32 oz)

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Disappointing compared to previous Nalgene protection, which really insulates. The insulation of this version is thin, so the drink does not stay hot for very long. Sure, the drink doesn't freeze, but it would be harder to drink even a warm than a cold drink in winter. On a winter hike, I drink the first drinks from Nalgene, which is protected by the new version, and then from Nalgene, which is protected by the older version

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Almost corresponds to the heat retention capacity of a thermos bottle, so transporting drinking water in winter is functional with the product

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The only real, reliable travel bottle.

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Highly functional additional insulation. Vetschari plays really well. The only downside is that the handle of the bottle breaks, time will tell if it lasts.

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The water did not freeze at night in the bottle with the cover, even though it was -10C below zero.

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Keeps the drink very cool.

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Sturdy to carry and suitable for the purpose. When it rains, you get wet and gain weight.

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Keeps the drink cold or warm for longer

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Really works! Tested at +25 degrees, in this case the drink was still very cool after 9 hours (the bottle was then about half empty). However, the bottle had first been kept with this cover for about 40 minutes in the cold. It was a good investment. In autumn/cooler weather, you can definitely throw in 6 more hours.

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I was a little suspicious of the product, but it works! The bad thing is that it makes the bottle bigger, of course.