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Mountain Hardwear Crazy Legs 20°

rated 4.5 of 5 stars

The Crazy Legs 20° has been discontinued. If you're looking for something new, check out the best 3-season synthetic sleeping bags for 2024.

Mountain Hardwear eggplant Crazy Legs 20 degree left hand zipper mummy bag.


  • Light
  • Warm
  • Expandable knee section


  • Losing a bit of loft (but that's from the multiple washes)
  • Sometimes a bit cold in the foot pocket

I've had my eggplant left-hand MH 20 degree bag for about 15 years and though I've had to wash her like seven times (old roommate's cat puddled on it) she still keeps me warm in the PNW nights and compresses down and is super lightweight.

Source: bought it new
Price Paid: $180

After sleeping in the bag, I don't see what's so crazy about it. All the other people cooped up in restrictive mummy bags are the crazy ones. The idea is you can bend one or both of your knees while zipped in, because there's elastic in that section. When your knees are straight, the elastic keeps the bag tight. I have long legs, and I can sit cross-legged if need be.

Another plus is the continuous-baffle design: I can shake some down around to suit the temperature; perfect for the range of temps this bag is good for. It's a classy bag!

Design: "Un-Mummy"
Fill: 550 fill down
Temperature Rating: 20F
Weight: 2lbs 15oz (tall)
Price Paid: $195

fits me superbly (5'10" 170#), much better than tnf cats meow. crazy legs feature is useful but i worry about the elastic failing. speaking of failing, one baffle was underfilled with down. i sent it back and requested a draft collar to be attached as well. the bag came back in 3 weeks from mtn hw with extra filling but they forgot the draft collar. at least they didnt charge me. beware: feathers will fly! i have feathers on/in most of my backpacking gear. next time, i'll spend more and get western mountaineering.

Design: mummy
Fill: 575 fill down
Temperature Rating: 20
Weight: 2lbs 10 oz
Price Paid: $200

For 16 years I owned a North Face 20 F down filled bag. In time it just stopped keeping me warm. Last month I purchased the BNB, what a difference. This bag is outstanding,I've camped in 13 degree weather and stayed perfectly warm. After 16 years fighting a restrictive mummy bag the crazy legs seem like a gift from God. I completely recommend this and every other bag from Mountain Hardwear.

Design: mummy
Fill: Polarguard HV
Temperature Rating: 20 F
Weight: 2lbs. 10oz.
Price Paid: $189

I have had this bag for about 10 years. I use it a few times a year, family camping to Antelope hunting in Wyoming. I have been in some pretty cold temps but stayed plenty warm. Camping in the spring I sometimes sleep on top of the bag until it cools enough outside. This is a very compactable light bag.

Price Paid: $189

This sleeping back has served me well through the years. The crazy legs feature is great. You can strech out in the morning after a good nights sleep even in temperatures around -10. Also it is easy to change clothes in the bag on a cold morning when you don't want to get out.

Design: mummy
Fill: 575 fill down
Temperature Rating: 20 F
Weight: 3lbs for a long
Price Paid: $200

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Price Reviewers Paid: $180.00-$200.00

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