I tried to see if the 'mountain bottle' with threatening heat retention is at a level where you can make cup ramen and coffee at the top of the mountain in winter. -
Thermos Mountain FFX 0,75 l Na Warunki Ekstremalne 12804990268 - Allegro.pl
Termos FFX Mountain - YouTube
Thermos Mountain FFX 750 ml - Forclimbers
Amazon.com: THERMOS FFX-901 Stainless Steel Bottle, 30.4 fl oz (900 ml), Matte Red (MTRD): Home & Kitchen