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Mountain Hardwear HyperLamina Flame 20

rated 4.5 of 5 stars
photo: Mountain Hardwear HyperLamina Flame 20 3-season synthetic sleeping bag

I purchased this bag for sea kayaking in the NW. This bag is warm, compresses small for a synthetic filled bag, and has a roomy footbox and a relaxed mummy design.


  • Lightweight
  • Roomy footbox
  • Warm for weight


  • Half zipper
  • Velcro placement at collar

First off, I have used this bag on multiple trips, both backpacking, sea kayaking, and car camping. I feel I have used it enough to give a solid review of its features.

This bag is light enough to carry and compresses small for a synthetic bag. It has no noticeable cold spots. The baffles seem to hold the fill in place well.

The best feature by far is the toe box. Even though this is a mummy bag it doesn't have a claustrophobic feel to it. Plenty of room to roll around and not have the bag bind up around you. Loft is still great and releases quickly after being in a compression bag all day. Seams are great, have had zero issues with zipper snags on baffles or seams. 

The half zip...I got this bag knowing it had a half zip and was interested/concerned with how much I would like it. If you sleep cold like I do it's good. You can still unzip to regulate heat effectively.

If you get hot feet at night, pass on this design. Also when I use my MSR Hubba it's a chore to get in this bag and remain in the tent. It feels a little like putting on pants instead of climbing into a sleeping bag. I get my feet in the bag and than kind of hop, squirm it over my hips and back. Once in the bag it's comfortable, warm and a solidly built bag. If you are a fan of hammock camping this design would not be my first choice either.

The other thing that I would change is the mummy collar. Yes, it is great to close it up in colder weather, but the placement of the Velcro pieces is not comfortable around my face.

I gave this bag a solid 4 stars, but the center zip keeps it from getting more. Honestly I would hate to ever have an animal visit my campsite while sleeping out under the stars in this bag. I would be a snack. 

Source: bought it new
Price Paid: retail

Very good.


  • Small size
  • Low weight
  • Very warm


  • Price, exept this is like the cheapest in its class

Warmth: Very good 

Fit and comfort: I will grow into my bag. I'm a teen. Comfort is very good.

Source: bought it used
Price Paid: $190

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Price Historic Range: $119.73-$255.00
Reviewers Paid: $190.00
Product Details from Mountain Hardwear »

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