Home / Products / Shelter / Kelty Cosmic Down 20 Degree Mummy Sleeping Bag | 550 Fill Power | Recycled Fabrics
Kelty Cosmic Down 20 Degree Mummy Sleeping Bag | 550 Fill Power | Recycled Fabrics
Shelter3-season car camping and lightweight backpacking from spring through fall

Kelty Cosmic Down 20 Degree Mummy Sleeping Bag | 550 Fill Power | Recycled Fabrics

$189.95
★★★★★4.5(1,200 reviews)

The Kelty Cosmic Down 20 is the gold standard for value down sleeping bags — 550 fill power down insulation rated to 20°F, with PFAS-free DWR on recycled shell fabric. Designed in Colorado and trusted by thousands of campers and backpackers, it packs smaller than synthetic bags while delivering genuine 3-season warmth. The 2024 model upgrades to recycled materials without raising the price.

Check Latest Price on Amazon →

Why You Need This

Either you're freezing in a cheap Walmart bag or you're staring at $400 ultralight down bags wondering if camping is worth a car payment. The Cosmic 20 splits the difference perfectly — 550 fill down, genuine 20°F rating, and a price that doesn't require a second job.

🏆 How It Compares

Vs. NEMO Disco 15: both down, similar temp rating. Disco costs $100 more and is slightly lighter. Cosmic 20 is the better value. Vs. synthetic bags (TETON Sports): Cosmic packs half the size and lasts twice as long.

Pros & Cons

✅ Pros

  • 550 fill down — genuine down warmth at synthetic-bag prices
  • 20°F EN comfort rating — true 3-season capability
  • PFAS-free DWR on recycled shell fabric
  • Packs down to 8L — fits in any backpack

❌ Cons

  • Not for deep winter (below 20°F)
  • Heavier than premium 800+ fill bags (2.7 lbs)
  • Mummy cut is snug — side sleepers may feel restricted

🎯 Who Is This For?

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Ready to Buy?

Check the latest price and availability on Amazon. Prices are accurate as of the date listed and may change over time.

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