Kelty Cosmic 40° Synthetic Backpacking Sleeping Bag – Compact & Lightweight


✅ Editor’s Pick


🛒 Available on Amazon


💰 Value-Focused

🥾 Kelty Cosmic Synthetic Fill 40 Degree Backpacking Sleeping Bag with Compression Straps, Compact and Lightweight, 2022 — Review, Key Features & Current Price

A quick, search-friendly breakdown of performance, comfort, durability, and overall value—so it’s clear who this product fits and why.

🧭 How This Product Was Evaluated

  • 👣 Comfort and usability for typical hikes
  • 🧱 Materials and build quality for repeated outdoor use
  • ⚖️ Value compared with similar products in the same category
  • 🎒 Fit for beginner and casual hikers

📸 Product Images

Kelty Cosmic 40° Synthetic Backpacking Sleeping Bag – Compact & Lightweight

🎯 Who This Is Best For

  • 🧑‍🦯 Beginner hikers and casual outdoor users
  • 🌲 Day hikes, light trails, and weekend trips
  • 💵 Buyers prioritizing practical value
  • 🗺️ General use in parks, trails, and travel hikes

💰 Current Price

🛒 Amazon Price:
EUR65.63
🕒 Updated: Dec 26, 2025 22:53:50 UTC ·

Price & availability information


View current price on Amazon

📦 Amazon page shows available sizes/colors, shipping, and returns.


⚙️ Product Overview

✅ Best For Beginner hikers, day hikes, casual outdoor use
👟 Comfort Built for extended walking and trail use
🛡️ Durability Suitable for common hiking environments
💵 Value Competitive for its feature set

🌟 Pros & Cons

✅ Pros

  • 🙂 Comfortable for most beginner hiking needs
  • ⚖️ Balanced feature-to-price ratio
  • 🧩 Easy to use with minimal setup
  • 🧭 Versatile for different trail conditions
⚠️ Cons

  • 🏔️ Advanced users may want higher-end features
  • 📏 Performance depends on correct size/fit


📝 Product Details

Let’s face it- when is backpacking ever actually easy? While we can’t take the pain out of your elevation gain, we CAN put you on the trail with the new Cosmic Synthetic Sleeping Bag. It’s a fully equipped mummy bag that’s light on weight and your wallet. The Cosmic synthetic is a three-season superstar built with our new CirroLoft synthetic insulation for lightweight, compressible warmth. Soft-as-silk nylon taffeta fabric means you’ll be thinking less about weary hiker feet and daydreaming about more QT in the outdoors.
20D Nylon Taffeta Shell, 50D Taffeta Liner, Cirroloft Synthetic Fill
Imported
40 Degree Temp Rating, Regular Size: Fits sleepers up to 6ft, fill weight 24oz, total weight 2lbs 6oz, stuff size (non-compressed) 15×8 inches. Color: Duffel Bag Green/Smoke
Packability: Integrated compression stuff sack, coupled with the premium packability of the synthetic fill allow the Cosmic synthetic to reach minimalist standards of backpacking gear. Trail weight varies by temp rating, from 2lbs 6oz to 4lbs 11oz.
Insulation: Cirroloft synthetic insulation provides reliable warmth in cold and damp conditions, maintains loft for even coverage with no cold spots. Temperature ratings from 0 degrees to 40 degrees, to ensure your time on the trail is comfortable.
Tailored Fit: Natural fit spacious footbox gives more room to wiggle your toes, and length options range to fit sleepers 5’8” to 6’6”. A handy stash pocket on the exterior of the bag for your overnight goodies and essentials in the tent.
Kelty Craftsmanship: Kelty is synonymous with quality in the outdoor community. Kelty gear is built for play, and built to last. The Cosmic Synthetic bag is ready to be put through the ringer on the trail, campground, and everywhere in between.

🏁 Final Assessment

Customers say

Customers find the sleeping bag comfortable and easy to use, with one mentioning it’s ideal for car camping or short backpacking trips. The bag receives positive feedback for its quality, with one customer noting it’s a good entry-level option. However, customers disagree on the size, with several finding it very small. The fit is also problematic, with multiple customers reporting it’s very snug.


❓ Frequently Asked Questions

Is this suitable for beginners?

Yes. It’s designed to be easy to use and practical for people new to hiking.

What type of hiking is it best for?

Day hikes, light trails, and casual outdoor activities.

Is this good value for money?

It offers a balanced mix of features and price compared with similar products.



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Prices and availability are subject to change.

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