EXPED MegaSleep Uno 25/40 Sleeping Bag Review

Bottom Line

The Exped MegaSleep Uno 25/40 is a lightweight, affordable sleeping bag with two temperature ratings. It stands out on our best sleeping bags for camping guide as a great choice for different climates and conditions because it can change with a simple flip. The burgundy side provides more warmth, rated to 25°F for cooler nights, while the blue side is rated to 40°F for warmer nights.

Senior Gear Analyst Ian Krammer camps regularly in the Colorado Rockies, where temperatures can swing from freezing to sweaty hot in a single day. A cinch mechanism at the neck helps retain a bit of warmth. Small draft tubes prevent cold air from seeping in. On warm nights, it unzips into a blanket. The Uno’s fast-drying, synthetic insulation also helps keep the bag fairly slim and portable.

However, the MegaSleep has some drawbacks. It’s not suitable for very cold conditions – it was uncomfortable below 40°F on the “warm” side. It also doesn’t have draft tubes or a hood, which left us feeling chilly. Our testing also found durability is a concern, with the zipper track failing and the zippers falling off during the sixth use. Despite these issues, it’s a good choice for those who want a no-frills, budget-friendly summer bag – just don’t expect it to last forever.

Comfort

The Exped MegaSleep Uno is a comfortable pick for warmer weather thanks to solid breathability and lots of space. Senior Gear Analyst Ian Krammer is a tosser-turner when he sleeps, swapping between back, side, and belly. He loves this bag for its huge rectangular design, offering easier movement versus mummy bags. This format accommodates a wide range of body types, too. We’re big fans of the soft, smooth 40D polyester that makes for a comfy night’s sleep. It can also be completely opened up into a blanket for hanging around the campfire or the ultimate ventilation when sleeping.

On the downside, the Uno lacks some features that would make it comfier. It doesn’t have a hood, so on cooler nights we sleep in a fleece mid layer and a  warm beanie to keep our heads and shoulders toasty. This model has minimal draft tubes that don’t add much cushion, so we could still occasionally feel the zippers. We also find the outside material could be a bit noisy. Still, this bag gets the job done on warm nights of car camping when we need a simple, comfy sleeping solution.

Warmth

If you want a lightweight, affordable option for warm summer nights, the Exped MegaSleep Uno hits the mark. The highlight of this bag is its two temperature options, with one side providing more warmth than the other. It’s an awesome option for hot sleepers or cold sleepers without having to mess with zippers and vents – simply flip the bag over and go back to sleep. 

Each side has a graphic clearly printed to remind you which is warmer. The burgundy side is rated to 25°F and has more insulation for a bit of extra insulation for cool evenings. The blue side has less insulation and a temp rating of 40°F, better for breathable comfort on hot nights. 

After a chilly night near a popular lake on the Front Range of Colorado, our testing shows this bag handles condensation like a boss, too. Even when the tent was soaked with condensation, we found the shell prevented water from entering, and it also dried quickly. A drawcord at the head helps retain warmth on chillier mornings, too. The two-way zipper unzips the footbox as much as needed for additional airflow, or you can unzip the bag completely and use it like a blanket for maximum airflow. 

However, cold sleepers take note – we find the MegaSleep struggles in colder conditions. Even with the warm side up, this model began to get chilly below 40°F, and the cooler side was best above 50°F. Below these temps, we found it was necessary to layer up. The lack of a hood and narrow draft tubes also contribute to the colder feeling of this bag, and it wasn’t unusual to find cold spots in the corners of the bag at the 40°F mark. Still, this is a summer model, and it performs well in mild conditions in June, July, and August.

Packed Size

The Uno’s packed size is a bit bulky. It’s large cylindrical stuff sack is accommodating, though, so it’s easy to stuff away. That said, it can be compressed even more when needed, so this model fits fairly easily in a trunk or storage closet. Despite its size, the Uno weighs only 3 pounds, 12 ounces, so it’s easy to move between car and campsite.

Features

The Exped MegaSleep Uno has a simple but thoughtful feature set. Its most prominent feature is the two-sided design for cooler or warmer nights, but this also makes it a great choice for warm sleepers. The Uno dovetails perfectly with the Exped Megamat, one of our all-time favorites on our best camping mattresses guide.

The Uno can completely unzip into a blanket, which we love for campfire lounging, sharing with a partner (or dog), or simply lots of ventilation when sleeping in warmer weather. This model also has a small internal pocket for stashing a few lightweight items like a chapstick, wallet, or lighter.

Our biggest issue with the Uno comes down to durability. Gear Analyst Ian Krammer accidentally broke the zipper during testing – and it was only our sixth time using the bag. The teeth on the zipper track near the neck separated, which led to the zippers falling off. We found the zippers could not be reattached after this, permanently turning the bag into a blanket. While this doesn’t appear to be a common issue, it was a big enough problem that we were dropped the MegaSleep Uno to the bottom of our list.  

We also appreciate the internal pocket, though it doesn’t have a closure system like a hook-and-loop patch or snap button, so items tend to fall out easily when we move in the night. The pocket is also a bit too small for most phones.

That said, this bag is built with simplicity in mind, so don’t expect anything more than a no-fuss sleep on warm summer temps. If you want a straightforward and comfy bag without any bells and whistles, this one is a solid choice.

Should You Buy the EXPED MEgasleep Uno 25/40?

The Exped MegaSleep Uno is a good pick for summer campers who want a versatile, no-nonsense bag at a reasonable price. Its adjustable temperatures, including the two-sided design with different fill levels, make it a great fit for anyone who wants the versatility for cooler or warmer nights. The cinch cord, stash pocket, and narrow draft tubes add a bit of warmth, but the two way zipper can dump heat at the feet or be unzipped fully into a blanket. Plus, the Uno works for most camping kits, since it’s fairly lightweight compared to many sleeping bags, and it’s packed size works well for most situations.

However, the MegaSleep Uno is not ideal for those planning to camp in cold conditions, as it lacks a hood and isn’t the warmest bag below 40°F. It’s also not necessarily the most durable option, as ours experienced a zipper failure. Finally, the pocket is a bit flimsy for bulkier items like a headlamp or a phone. Still, for summer campers and warm-weather enthusiasts who want a simple, fairly affordable sleeping bag for occasional use on milder nights, the Uno is a practical and comfortable sleeping bag.

What Other Camping Sleeping Bags Should You Consider?

See our guide to the best camping sleeping bags to find out how this model compares to the rest. And consider these other options: 

The North Face One Bag Review: The North Face One Bag also has multiple temperature options – 5°F, 20°F, and 40°F – and a comfortable interior like the Uno. However, it stands apart with a zip-off system that combines down and synthetic insulation, so it’s considerably more expensive. 

The North Face Wawona Bed 20 Review: The North Face Wawona Bed 20 shares the same rectangular design as the Uno, including a wrap-around zipper. Unlike the MegaSleep, it doesn’t offer varying temperature settings, but we prefer the plush, cushioned interior of this option.

Coleman Brazos 30F Review: The Coleman Brazos has a rectangular shape and wrap-around zipper that opens into a blanket, like the Exped MegaSleep Uno. It doesn’t have temperature adjustments and it’s interior liner is a bit clingy, but it comes with a much lower price tag, making it a top Budget Pick.