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Backpack when the living's easy.

Short of actually knitting yourself a sweater out of bobcat fur, there's no better way to stay warm on summer nights than The North Face Lynx 40-Degree Synthetic Sleeping Bag. One of the lightest, most packable synthetic summer bags on the market,  the Lynx is EN-rated to keep you easily comfortable to 47 degrees, and won't have any issues if temps drop down into the 30s. How? The North Face's Heatseeker Pro insulation sandwiches super-compressible synthetic between layers of rugged filament, providing serious levels of warmth and packability without adding extra weight. The mummy design is ultra-efficient, too, cutting down on material while maintaining warmth, making the Lynx a top-shelf summer backpacking bag.

Of course, it'd all be for naught if your bag got wet, right? Not quite. Synthetic insulation stays warm even if it gets wet, so damp nights won't necessarily be sleepless ones. There's also a draft hood and collar to seal out cold air, a snug hood to trap heat around your head, and loops to keep your bag securely attached to your sleeping pad. Even the zippers are designed to be snag-free, and have glow-in-the-dark pulls for enhanced awesomeness.

  • Synthetic Heatseeker Pro insulation
  • EN-rated comfort to 47deg
  • Ultralight mummy design
  • Shaped hood with drawcord
  • Draft collar and no-snag draft tube
  • Pad loops for sleeping pad attachment
  • Internal pocket
  • Anti-snag zipper with glow-in-the-dark zipper pull
  • Compression and storage sacks included

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Here's what others have to say...

Unanswered Question

What is the weight of the NORTH FACE LYNX Prism 40 bag alone (ie not including the stuff sack)? thanks


great progress from the old poly bags

  • Familiarity:I've used it several times

for years, artificial fiber bags were all the same: heavy, thin, cold. even my North Face bag. this bag is lighter, lofty, and pretty warm. also, North Face has paid special attention to the finishing and details -- no hanging threads or oversewing here. I cannot use down bags without triggering an allergy, but this one is plenty good.


Not Bad

  • Familiarity:I've used it several times

This bag is lightweight and compresses down nicely. The zipper is not as "anti-snag" as they'd like you to think. Also, a 40 degree bag might be pushing it just a little bit.

All in all, I would recommend this bag to others.