---
product_id: 319898344
title: "Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compression Straps, Stuff Sack Included"
brand: "kelty"
price: "$633"
currency: MXN
in_stock: true
url: https://www.desertcart.mx/products/319898344-kelty-cosmic-synthetic-fill-20-degree-backpacking-sleeping-bag-compression
store_origin: MX
region: Mexico
---

# 2lb 13oz ultralight trail weight 16x9in compact stuff sack 20°F temp rating for cold nights Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compression Straps, Stuff Sack Included

**Brand:** kelty
**Price:** $633
**Availability:** ✅ In Stock

## Summary

> 🔥 Sleep Warm, Pack Light, Conquer Every Trail 🎒

## Quick Answers

- **What is this?** Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compression Straps, Stuff Sack Included by kelty
- **How much does it cost?** $633 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/319898344-kelty-cosmic-synthetic-fill-20-degree-backpacking-sleeping-bag-compression)

## Best For

- kelty enthusiasts

## Why This Product

- Trusted kelty brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Storage:** External stash pocket keeps your essentials like headlamp or phone within easy reach inside your tent.
- • **Built to Endure:** Kelty’s renowned craftsmanship means this sleeping bag is rugged enough for every trail and campsite adventure.
- • **Trail-Ready Warmth:** CirroLoft synthetic insulation keeps you cozy even in damp, cold conditions without cold spots.
- • **Tailored Comfort Fit:** Spacious footbox and length options up to 6ft ensure freedom to wiggle and perfect fit for most sleepers.
- • **Featherlight & Packable:** Weighing under 3 lbs with an integrated compression sack, it fits effortlessly into your backpack.

## Overview

The Kelty Cosmic Synthetic Fill 20 Degree Sleeping Bag is a lightweight, compressible mummy bag designed for three-season backpacking. Featuring CirroLoft synthetic insulation, it delivers reliable warmth down to 20°F while maintaining loft in damp conditions. With a natural-fit spacious footbox, integrated compression sack, and handy stash pocket, it balances comfort, convenience, and durability for serious outdoor enthusiasts.

## Description

THE (BACKPACKING) INTERSECTION OF LIGHT WEIGHT AND WARMTH 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 20 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. Environmental & health friendly PFC-Free DWR New CirroLoft synthetic insulation Natural-fit spacious footbox = more room to wiggle your toes Handy stash pocket for your headlamp/cell phone/actual stash Buttery-soft and durable nylon shell Compression stuff sack included Regular ISO Temp Rating (Comfort): 32 / 0C ISO Temp Rating (Limit): 22 / -6C Fits to: 6’ / 183 cm Length: 78” / 198 cm Shoulder Width: 31" / 78.5 cm Fill Weight: 30.5 oz. / .86 kg Total Weight: 2 lb. 13 oz. / 1.3 kg Stuffed Size: 16" x 9.5" / 41 x 24 cm.

## Features

- 20 Degree Temp Rating, Regular Size: Fits sleepers up to 6ft, fill weight 30. 5oz, total weight 2lbs 13oz, stuff size (non-compressed) 16x9 inches. Color: Tapestry Blue/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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age Range | Adult |
| Color | Blue |
| Size | Regular |
| Style | Regular |
| Height | 10 inches |
| Length | 22 inches |
| Weight | 3.1 Pounds |
| Width | 11 inches |
| Shape | Mummy |
| Material Type | Blend |
| Maximum Height Recommendation | 6 Feet |
| Outer Material | Synthetic |
| Season | All Seasons |
| Features | Compressible |
| Sport | Camping & Hiking |
| Temperature Rating | 20 Degrees Fahrenheit |
| Included Components | Sleeping Bag, Stuff Sack |
| Batteries Included? | No |
| Brand | Kelty |
| fill material type | Synthetic |
| Department | mens |
| Manufacturer | Kelty |
| Item model number | 35428620RR |
| Product Dimensions | 487.68 x 274.32 x 0.1 cm; 1.36 kg |
| ASIN | B082P66GZ8 |

## Product Details

- **Brand:** Kelty
- **Colour:** Blue
- **Occupancy:** 1 Person
- **Shape:** Mummy
- **Seasons:** All Seasons

## Images

![Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compression Straps, Stuff Sack Included - Image 1](https://m.media-amazon.com/images/I/41BYQNQMU2S.jpg)
![Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compression Straps, Stuff Sack Included - Image 2](https://m.media-amazon.com/images/I/41pEe3NjTrS.jpg)
![Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compression Straps, Stuff Sack Included - Image 3](https://m.media-amazon.com/images/I/61r+0kQ0iRL.jpg)
![Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compression Straps, Stuff Sack Included - Image 4](https://m.media-amazon.com/images/I/61wAa52pyJL.jpg)
![Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compression Straps, Stuff Sack Included - Image 5](https://m.media-amazon.com/images/I/81c393jsDfL.jpg)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-22*