Sleep Systems: Planning for 2 a.m., Not Bedtime
We leave our sleep systems packed away until just before bed. It keeps the tent more spacious and comfortable during the evening hours, especially when you’re sitting around the stove or constantly going in and out of the tent. It also helps keep sleeping bags and pads protected from moisture while you’re tracking in snow.
Insulation rating matters more than tent warmth.
When it’s time to sleep, we plan for overnight conditions, not how warm it feels at bedtime. Our sleep systems are always rated for outside temperatures, regardless of how long the stove burns.
A hot water bottle helps bridge the cold gap.
One trick that made a big difference for when we were using the first stove, is the hot water bottle. We use a tight-sealing bottle like a Nalgene, fill it with hot water, and put it in the sleeping bag before bed. It won’t stay warm all night, but it holds heat for several hours. That extra warmth helps buffer the drop in temperature once the stove goes out, and can buy you a little more comfortable sleep before the cold fully settles in.
Dry layers at night are non-negotiable.
We always change into fully dry base layers before bed. Socks get swapped before crawling into the sleeping bag, no matter the season, and having dry layers reserved for sleeping makes a noticeable difference.
We rely heavily on merino wool base layers for both daytime activity and sleep. Merino regulates temperature well, continues insulating even if slightly damp, and is naturally odor-resistant. They’re practical when you’re wearing the same layers for setup, camp chores, and overnight. As a natural fiber, it also avoids the microplastic shedding associated with many synthetics.
Avoid cotton in winter. It holds moisture and can accelerate heat loss once you stop moving.