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A warm bag built for two.

On those cold nights, there's nothing like spooning up with your partner in the two-person Mountain Hardwear Megalamina Sleeping Bag. With its patented welded seams to reduce heat loss and maintain maximum insulation, the Megalamina will help the two of you sleep comfortably three seasons out of the year.

  • 20-degree Fahrenheit rating ideal for three-season camping in most environments
  • Double-wide cut provides relaxed comfort for two adults
  • Lamina welded construction attaches the shell fabric directly to the insulation to eliminate cold spots
  • Thermic Micro synthetic insulation is durable, compressible, and lofty
  • 40D ripstop nylon shell with DWR coating for rugged durability and water resistance
  • Full-length two-way zipper for versatile ventilation options
  • Includes stuff sack - compressed size is 10 x 20 in

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Mountain Hardwear Megalamina 20 Sleeping Bag: 20 Degree Thermic Micro

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Here's what others have to say...

Does this bag completely unzip to provide...

Posted on

Does this bag completely unzip to provide two seperate halves?

Responded on

Hey LHC,

It does not zip into two separate halves.

4 5

Great bang for the bag buck

I've replaced two single zip together sleeping bags with one MegaLamina for car camping and have been very happy with it. The Mega gets a lot of its warmth from two bodies, which in the case of two zip together bags, you are only getting part of as they usually only zip together 1/2 or 3/4 of the way. This means your feet are constricted and the bags are kind of uncomfortable, which is not the case with the Mega. For plush, over the top comfort, get a Coleman inflatable mattress (and of course 12v pump) from WalMart and you'll be sleeping better than at home.

A word of caution with this bag is that it can be pretty cold if you use it solo, or, just in general. I'm not sure where MFG'ers come up with their bag ratings, but we used this bag in 35ish degree weather and had to sleep with all of our clothes on, as well as an extra blanket on top. But, for warm summer camping, it is ideal.

Responded on

Sleeping bags are rated to the survivable temperature outside. This means, that at 20*, you won't be warm, but you won't freeze to death. I'm not sure where "they" came up with the idea, but its pretty silly. There are a few bags that actually show the scale; my North Face summer bag shows the scale from "Comfort" to "Survival" on the inside near the end of the zipper.

What double sleeping bag is the best for...

Posted on

What double sleeping bag is the best for car camping in of Wisconsin, Indiana, Mischigen from May to late October? I would be very grateful as if someone helped me with this problem because I do not know what I have to buy a Double Bag.

Best Answer Responded on

Hi Klamostsky - I've used this bag (the MHW MegaLamina) in Utah, Idaho and Wyoming and think it is great. Double bags are indeed a bit tricky as you are getting a lot of your warmth/heat from the other person, so the standard rules don't really apply. I replaced two zip together bags with one Mega and have been happy with it as it is more comfortable. That said, if you sleep solo in a double bag, it is going to be cold, or least that has been my experience.

Zipper on both sides ?

Posted on

Zipper on both sides ?

Best Answer Responded on


It does indeed.