Seek Outside - 6 Person Tipi Hot Tent Bundle

Second what others have said. UL is always a bet that the worst won’t happen and you can ignore discomfort in the name of weight as comfort. The same can’t be said for winter camping where the margins are much tighter. With that being said alpine climbing has been doing UL since before it was cool. There are plenty of 4 season (in reality 1 season) alpine single wall tents like the Rab Latok, Samaya 2.0, MHW AC 2 that are all around 1.7kg and designed to take intense weather. They tend to be designed for snow not rain, so struggle above 0. I got a TNF one on pro deal it’s only useful for mountaineering ascents. But they’re cramped and you get wet every time you run any body part along the wall. I’ll take the extra 1kg of an MSR Fury which is more spacious and more comfortable any day. For ski tours I prefer pyramid tents and dog down using the snow for insulation. One option that balances out fairly well is the SeekOutside hot tents. Tent pole pyramids with the option for titanium stoves. They get super hot, too hot really while you feed the fire. Unfortunately the stoves only accept small bits of wood and require regular feeding. You often go to bed sweating and wake up very cold. You also need the time to gather burnable firewood, which is not always easy in some environments. Without the stove they are lighter than compatible pyramid tents, especially the Dyneema version.