I've been building and testing bug out bags since this site launched in 2012 — and in that time I've audited hundreds of setups across all experience levels. One thing stays remarkably consistent: the sleep system is almost always the weakest link in the bag.

People spend serious money on packs, boots, and comms. They nail their water filtration. Then they grab whatever sleeping bag liner was cheapest on Amazon and call it done. Some skip a real sleep solution entirely and just toss in a Mylar blanket.

I get it — sleep feels like a comfort category when you're building a bag on a budget. But after 15 years of prepping, I've come around hard on this: rest is a force multiplier. Push hard for 12 to 24 hours without quality sleep, and your decision-making degrades, your situational awareness drops, and you become a liability to yourself and anyone with you. This isn't abstract — it's basic human physiology.

So today I want to make the case for COCOON as the sleep system brand that actually gets it right for serious preppers.

What Is COCOON?

COCOON is an Austrian gear company that has been making ultralight travel and outdoor sleep solutions since 1989. They don't market to the prepper community — their core audience is ultralight backpackers, globe-trotting travelers, and alpine climbers. That's part of why I trust them. They've spent decades solving the exact problems we care about: how do you sleep well when you're covering ground under uncertain conditions with limited weight to spare?

Their two product lines most relevant to a bug out bag build are their hammock systems and their MummyLiners. Together, they form what I now consider the most packable, weight-efficient sleep setup you can carry.

The COCOON Ultralight Mosquito Net Hammock — $119.95

Here's something Florida has drilled into me over the years, and it applies anywhere south of the Mason-Dixon and across much of the Eastern US: the ground is not your friend during a bug out.

Standing water, fire ants, mosquitoes that carry real pathogens, snakes looking for warm spots at night — the case for getting off the ground isn't about comfort. It's about threat elimination. The same logic applies anywhere with significant insect pressure, flood risk, or compromised terrain.

The COCOON Ultralight Mosquito Net Hammock solves this in a package that packs to 7 inches by 3 inches — roughly the size of a softball — and weighs just 13.9 ounces without carabiners.

What makes it work for bug out use

• 20 denier hexagonal ripstop nylon — tough and genuinely lightweight. Not the floppy stuff you find on budget hammocks.
• Integrated mosquito net with 600 holes per square inch — no-see-ums cannot get through this mesh. I've tested it in South Florida in August. It holds.
• YKK zippers on both sides — dual-entry so you can get in and out from either side, tie the doors back for airflow in heat, or zip completely sealed in bug country.
• UHMW-PE ultralight end cords and ridge line — ultra-high-molecular-weight polyethylene, the same material class used in cut-resistant gear. It will outlast the trees you hang it from.
• Two 12 kN aluminum carabiners included — 12 kilonewtons is roughly 2,700 lbs of rated force.
• Dimensions: 128" × 58". Max load: 309 lbs. Lifetime warranty.

Setup is fast. My first time rigging it between two trees with zero practice, I was off the ground in under four minutes. If you can tie a slipknot, you're ready.

One note: the hammock does not include straps. Budget another $15–20 for a set of 1"-wide tree suspension straps — they add almost no weight and pack flat. Add them to your essentials checklist alongside the hammock.

→ COCOON Ultralight Mosquito Net Hammock — $119.95

The MummyLiner — The Part That Completes the System

A hammock keeps you off the ground and away from bugs. But on its own, it won't keep you warm — and without an underquilt or liner, it may actively work against you. Cold air circulates freely beneath a hammock, accelerating heat loss in a way your sleeping bag's temperature rating doesn't account for. That rating assumes ground sleeping with insulation below you. In a hammock without supplemental insulation, that number is misleading.

This is where COCOON's MummyLiner range earns its place in the bag.

A MummyLiner is a tapered sleeping bag liner designed to go inside your sleep system, add warmth, and protect your bag from body oils and dirt — significantly extending its life. COCOON makes over 25 versions across different materials. For BOB use, three matter:

Option 1: MummyLiner Microfiber — $38.95 (Entry point)

If you're equipping your first real sleep system on a tight budget, start here. Lightweight, quick-drying, machine washable, and available right now in three colorways. It gets you into the COCOON system for under $40 and meaningfully improves the real-world performance of any budget sleeping bag.

→ COCOON MummyLiner Microfiber — $38.95

Option 2: MummyLiner Silk — from $89.95 (Best all-around)

This is my pick for most preppers. Silk does something synthetics can't fully replicate: it actively responds to your body temperature, feeling cool when you're running hot and retaining warmth when you're cold. For a bug out scenario where you're transitioning hard between exertion and rest, that adaptive quality matters.

The COCOON Silk MummyLiner weighs approximately 4.7 oz and adds up to 9°F to your sleep system's effective temperature rating. It also resists odor better than synthetics — relevant on day three of a scenario when laundry isn't an option. Available in ten colorways; Dark Olive Green is my field preference.

→ COCOON MummyLiner Silk — from $89.95

Option 3: MummyLiner Thermolite Performer — $69.95 (Cold weather)

If your region regularly drops below 40°F, step up to the Thermolite Performer. Thermolite is a hollow-fiber synthetic insulation engineered for cold-weather performance. COCOON's version adds significantly more warmth than silk or microfiber while still packing small. This is the liner for northern climates and winter planning.

→ COCOON MummyLiner Thermolite Performer — $69.95

The Full System by Climate

Warm and Humid (Florida, Gulf Coast, Southeast)

• COCOON Ultralight Mosquito Net Hammock — $119.95 / 13.9 oz
• COCOON MummyLiner Silk — $89.95 / ~4.7 oz
• Tree suspension straps — ~$15–20 / ~3 oz
• Total: ~22 oz | ~$225–230

Temperate and Four-Season

• COCOON Ultralight Mosquito Net Hammock — $119.95 / 13.9 oz
• COCOON MummyLiner Thermolite Performer — $69.95 / ~8 oz
• Tree suspension straps — ~$15–20 / ~3 oz
• Total: ~25 oz | ~$205–210

Either way, you're well under 2 lbs for a complete off-ground sleep system with integrated bug protection. Compare that to a minimalist backpacking tent — typically 2–3 lbs before any insulation — and the weight argument is settled. For a full look at what else belongs in your bag alongside this, check my 80-item Bug Out Bag Essentials Checklist and the complete Bug Out Bag tutorial.

One More Thing: Your Feet

I always close gear reviews with something people overlook. Here it is: the quality of your sleep is directly tied to the condition of your feet. Damaged, blistered feet on day one mean poor rest on day two regardless of how good your hammock is. Get your footwear sorted first — read my guide on preventing and treating blisters in the field, and if you haven't upgraded your boots, my review of the Salomon Speedcross 6 Forces is worth your time. Foot care and sleep quality are two sides of the same coin.

Final Verdict

COCOON doesn't market to preppers. They don't need to. What they've built — a lifetime-warranted, sub-14-oz hammock with integrated no-see-um protection and a lineup of ultralight liners that genuinely perform — is exactly what the bug out sleep system category has needed.

Don't let sleep be your weak link. The rest of your kit is only as good as the person running it.

— Mr.BOBB
BugOutBagBuilder.com | Prepping since 2012

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