SIGG Thermal Bottle 1.0 Liter

Have my 1L for about 10 years now and it still hold hot warm drinks for 24 hours, if you pre-warm it. Best for backpacking, mountaineering in cold weather.

This 1L bottle weighs 522g being lighter than many other brands. It had a round bullet shape, that fits easily in inside backpacks without damaging plastic bags inside. Mine was made before the "Steelworks" sub brand, so I though it was made is Switzerland. Haven't had  any problems inside it, such as ruptured liner, rust, etc. Used daily, as we drink a lot of chimarrão down here.

Unfortunately, I discovered it was discontinued (for a new and less functional design, where the cup fits the bottom of the bottle, contacting dirty) and Sigg doesn't have a gasket as replacement part. :0( 

If an item became useless because of a gasket, defect, unreliability etc, it's time to think about planned obsolescence and its environmental consequences when choosing a brand.