Rumpl Wrap Sack 20° Sleeping Bag Review

If you’ve ever struggled to get a good night’s sleep while camping, the Rumpl Wrap Sack 20° might be the solution you didn’t know you needed; in this review I’ll try my best to explain why.

This sleeping bag isn’t built for ultralight missions or high-alpine expeditions—its priority is simple: comfort. And this is what is going to make it so attractive to most recreational campers out there.

Designed for car camping, rooftop tents, or just making the outdoors feel a bit more like home, it’s a cozy, feature-rich sleep bag that feels more like your favorite comforter than an item of outdoor gear.

It also brings something fresh to the table: a modular layering system that lets you actively adjust your warmth level throughout the night. After testing it out for myself, here’s how it stacks up.

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Key specifications

• Price: $249.95 at rumpl.com
• Weight: 5 lbs / 2.27 kg
• Temperature Ratings: 20ºF Limit / 30ºF Comfort (ISO 23537-1)
• Packed Size: 11 x 17.25 in (27L roll-top stuff sack)
• Dimensions (flat): 35” top / 33.5” middle / 32” bottom x 82” long
• Materials:
  • Shell: VersaWeave™ 30D ripstop polyester (100% post-consumer recycled)
  • Shell Insulation: RenewaLoft™ synthetic insulation
  • Liner Insulation: NanoLoft® synthetic down alternative
• Max user height: 6’2”
• Key features:
  • WrapAdapt™ Layering System
  • Pillow Pocket Hood
  • Cape Clip® Layer Anchors
  • Full two-way zipper for foot venting
  • PFAS-free DWR finish
  • Machine washable

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Performance review

What really sets the Wrap Sack apart from traditional sleeping bag systems is Rumpl’s new WrapAdapt Layering System.

Instead of the usual zip-up-and-deal-with-it construction, you get two overlapping wings that can be zipped and clipped into different configurations.

It sounds simple—and it is—but the flexibility this gives you when temps fluctuate overnight is a genuine win.

You can start with a single layer, then add more insulation by pulling in the second panel without having to get out of the bag.

The Cape Clip system deserves a shout, too.

These little toggles help secure the inner layer to keep it from slipping or bunching, but they don’t restrict movement when you toss and turn.

I found the whole setup intuitive after a couple of nights, but I will say it’s slightly fiddly the first time—especially if you’re cold or fumbling in the dark. The easiest way to avoid this is to try out your camping gear before you go on your trip.

The Pillow Pocket Hood is another clever feature.

It holds a Rumpl pillow ($49)—or any pillow of similar size—in place so it doesn’t slide out from under you. Small detail, but it genuinely improves sleep.

Combine that with the two-way zipper that lets you vent your feet without peeling open your torso, and you’ve got a bag that feels like it was designed by someone who’s actually tried to sleep in a tent.

Warmth-wise, the bag performs really well, and as stated on the Rumpl website.

It’s rated to 30ºF for comfort (meaning that’s the coldest level for a nice comfortable sleep but it will keep you ‘warm enough’ at 20 degrees), and I stayed cozy in temps dipping into the high 40s.

That’s partly thanks to the RenewaLoft and NanoLoft insulation, which strikes a great balance between synthetic warmth and environmental responsibility (both are made from 100% post-consumer recycled polyester).

I’m all too familiar with NanoLoft, from my multiple Rumpl Puffy Blankets that use the same insulation.

At 5 lbs, though, this is definitely not a backpacking bag. You’ll want to save it for car camping, rooftop tents, or camper vans.

It also takes up more room when packed than a down mummy bag would, but I have no problem storing it in a gear bin or trunk.

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My verdict

The Rumpl Wrap Sack 20° isn’t built for hardcore missions or fast-and-light travel—but that’s kind of the point, and to be honest, it’s what makes this one standout from everything else out there right now.

It’s designed to make sleeping outside feel more like sleeping at home, and it nails that brief.

The modular layering system, foot vent, and pillow pocket all solve real problems that typical sleeping bags don’t address.

It’s also made with recycled materials and has a PFAS-free DWR, so it aligns with more conscious consumer choices, too.

Yes, it’s bulky and on the heavier side, and no, it’s not ideal for steamy summer nights or alpine snow caves.

But if you’re heading to the campsite and want to actually enjoy a night’s sleep without waking up in a tangled mess, this bag delivers.

You can purchase the Wrap Sack ($249.95) and the Camp Pillow ($49) at rumpl.com via the links below:

For spring, summer, and fall camping—especially if you’re a side-sleeper, tosser-turner, or just like your space—it’s one of the most thoughtfully designed bags I’ve tested.

If you’ve got any questions for me – drop them in the comments and I’ll get back to you! 🙂 -Alastair