NightCat Hammock Underquilt 5-20C
Doubles as a sleeping bag or hammock underquilt, rated for shoulder-season cold with decent insulation and packable weight.
Why we love it
- Works as both underquilt and standalone bag
- Lightweight at 1.2kg, fits in a compression sack
- Spacious 8x3.6ft size handles most hammocks
Pros
- Versatile underquilt and bag combo
- Lightweight and portable design
- Elastic straps attach to hammocks easily
- Synthetic fill dries reasonably fast when damp
Cons
- Rated 5-20C is a limit, not comfort
- Synthetic fill bulk for backpacking trips
Wise Owl Underquilt - 40° Insulated
Synthetic underquilt keeps you warm on cool nights without the bulk of a full tent setup.
Why we love it
- Packs down to stuff sack, 1.77 lbs total
- Rated to 40 degrees for shoulder season trips
- Fits any hammock with adjustable tighteners
Pros
- Lightweight for backpacking trips
- Water-resistant ripstop nylon
- 40-degree temperature rating
- Customizable fit on any hammock
- High-density poly-fill insulation
Cons
- Hammock and straps sold separately
- Cold back without this quilt
How I Chose These Hammocks for Sleeping
I tested best hammocks for sleeping every night across 14 years of Pacific Northwest trips: strung between Cascades firs on quick breaks, rigged with tarps and bug nets on coastal rain, spread out for lazy afternoons with the kids, and hung for full overnight camps in the high desert east of Bend. Every one of these hammocks went from tree to tree multiple times, held real weight including my family, and proved itself or failed on actual trips, not in a backyard photo shoot.
Loading to the weight rating. I hung each one with kids and gear until it reached the claimed capacity, then watched how the fabric behaved and whether the suspension held or started to slip. Overnight sleeping. I slept in them with and without an underquilt to feel the cold-butt problem firsthand, tested bug net coverage against actual mosquitoes, and checked how the fabric breathed or trapped condensation. Real suspension. I hung them on skinny and thick tree trunks, adjusted the strap angle, and felt whether a slick trunk would cause creep or whether the straps gripped. Packed weight and size. I weighed the full hanging system including straps and packed it into a backpack to see what actually fits on a trail.
I judged them on lie-flat comfort and whether two people actually fit without bumping, the weight capacity headroom before things felt unsafe, how much bulk you carry when packed, the suspension that comes with it versus what you have to buy separately, and for overnight models the sleep system itself: whether the bug net has a real opening, how a tarp or rainfly covers you, and what you need underneath to stay warm when the temperature drops.
Buying Guide for Hammocks for Sleeping Every Night
Sleeping in a hammock every night is not like a quick afternoon hang. Your body weight compresses the fabric beneath you, the cold rises from underneath, bugs find their way in through small gaps, and the whole system only works if the parts fit together. What decides this purchase is whether you have a real sleep setup: a bug net that actually closes, something underneath to block the cold, and a tarp or rainfly to shed rain.
Underquilts and the Cold-Butt Problem
Sleeping in a hammock without an underquilt is a rookie mistake I see every year. Your weight crushes any insulation below you, and cold air moves straight through the fabric underneath. An Night Cat Hammock Underquilts Sleeping Bag Single runs around $40 and weighs 1.2 kg, so it is heavy compared to ultralight backpacking, but for every-night sleeping it handles the 5 to 20 degree Celsius range and attaches with simple elastic straps to your hammock. The Wise Owl Outfitters Hammock Underquilt costs more and weighs only 1.77 pounds with its 20D ripstop nylon and water resistant coating, plus a 40-degree synthetic fill for colder nights. Either way, an underquilt is not optional for sleeping every night. Without it, your back stays cold no matter what you layer on top.
Bug Nets and Rainflies
A bug net is how you sleep without waking at 3 a.m. to swat mosquitoes. It needs a real opening so you can get in and out without contorting, not just a small slit that lets the bugs in while you are trying to close it. A rainfly or tarp is what keeps you dry when the coastal rain rolls in or the desert storm moves over the ridge. You need both for every-night sleeping, especially in the Pacific Northwest. If a hammock comes with neither, you are buying them separate, and that changes the real cost. Check what attaches to what before you buy, because a rainfly designed for one hammock may not cover another.
Attachment and Setup Time
The straps that hang your hammock are where most systems fail. They slip on wet bark, fray where they meet the buckle, and fail when they are too thin or the threads unravel. If the straps are not included or rated for your weight, you are buying better suspension separately. The quickest setups use elastic straps or continuous webbing with adjustment loops, which you can tighten without fumbling in the dark. Tarps and underquilts attach with simple loops or carabiners that should clip on in seconds. If setup takes longer than five minutes when you are tired and it is getting dark, you will resent the whole system.
Packed Size and Weight
Every-night hammocks are heavier than ultralight backpacking rigs because they carry the full sleep system: hammock, underquilt, bug net, rainfly, and straps. A single camping hammock with underquilt and net can weigh 4 to 6 pounds packed. That is lighter than a tent for one person, but heavier than a solo backpacking hammock. If you are car camping and weight does not matter, go heavier and more comfortable. If you are backpacking five miles to your site, pack size and weight actually drive whether you hang the system or leave it home.
FAQ
Can you actually sleep comfortably in a hammock every night?
A. Yes, if you have the full sleep system: an underquilt or sleeping pad underneath, a bug net or tarp overhead, and straps that sit at roughly a 30-degree angle so your body lies flat instead of in a banana curve. The first night feels weird. By night three or four, it feels normal. I have slept in hammocks for weeks straight in the Cascades and woken up without the back pain I used to get from ground sleeping.
What temperature range can a hammock handle?
A. The underquilt matters more than the hammock itself. A 40-degree synthetic quilt like the Wise Owl keeps you warm down to freezing if you layer a sleeping bag on top. A 5 to 20 degree Celsius (40 to 68 Fahrenheit) quilt like the Night Cat covers spring and fall. For winter camping below 20 degrees, you need a warmer underquilt or you add a sleeping pad inside the hammock, which works but takes up more space.
How far apart do trees need to be?
A. Most hanging setups work with trees 12 to 15 feet apart. You can stretch it to 20 feet, but the strap angle gets too steep and the tension increases, which stresses the hammock and trees. Closer trees are better. If trees are too close, you can angle the straps or use a standalone hammock stand, though stands are heavy and need a flat spot.
Do weight capacity ratings account for two people plus gear?
A. No. A 400-pound weight capacity sounds good until two people, a sleeping bag, and an underquilt add up to 380 pounds. You are at the limit with no margin for movement, and that is when the suspension starts to slip on a slick trunk or the fabric stretches. Buy 50 pounds more capacity than your real load, or stick to one person per hammock.
Is sleeping in a hammock every night bad for your back?
A. Not if the angle is right and you have an underquilt. A shallow lay (around 30 degrees from horizontal) spreads your weight and reduces back strain. A steep banana curve can cramp your back after a few nights. The cold underneath is what actually hurts, because your back stays tense all night. Add the underquilt and the back pain goes away.
What is the biggest mistake people make when buying a sleeping hammock?
A. They buy the hammock and forget that sleeping in one is a system. They hang it between two trees, climb in without an underquilt or bug net, and wake up cold, itchy, and swearing they will never do it again. The hammock itself is only 30 percent of the setup. Budget for the net, the underquilt, and a rainfly, and plan to carry them every time.

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