---
product_id: 610552247
title: "Kelty Cosmic 20 Down Mummy Sleeping Bag for Backpacking, Campers, 550 Fill Power, Recycled Fabrics with PFAS-Free DWR, Designed in Sunny Colorado,"
brand: "kelty"
price: "A$441"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/610552247-kelty-cosmic-20-down-mummy-sleeping-bag-for-backpacking-campers
store_origin: AU
region: Australia
---

# 550 Fill Power Down Recycled Nylon & Polyester ISO 21°F Limit Rating Kelty Cosmic 20 Down Mummy Sleeping Bag for Backpacking, Campers, 550 Fill Power, Recycled Fabrics with PFAS-Free DWR, Designed in Sunny Colorado,

**Brand:** kelty
**Price:** A$441
**Availability:** ✅ In Stock

## Summary

> 🛶 Sleep Warm, Tread Light: The Cosmic 20 is your eco-friendly passport to next-level backpacking comfort.

## Quick Answers

- **What is this?** Kelty Cosmic 20 Down Mummy Sleeping Bag for Backpacking, Campers, 550 Fill Power, Recycled Fabrics with PFAS-Free DWR, Designed in Sunny Colorado, by kelty
- **How much does it cost?** A$441 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/610552247-kelty-cosmic-20-down-mummy-sleeping-bag-for-backpacking-campers)

## 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

- • **Eco-Chic Performance:** Crafted from recycled nylon and polyester with PFAS-free DWR—camp sustainably without sacrificing style or function.
- • **Legacy of Outdoor Innovation:** Designed in Colorado since 1952 with a limited lifetime warranty—join a community that values quality and conservation.
- • **Tailored for Every Trailblazer:** Available in three sizes with a mummy shape for optimal heat retention and comfort up to 21°F—because your adventure deserves a perfect fit.
- • **Ethical Warmth, Zero Compromise:** 550 fill power down that's 100% RDS certified and traceable—warmth you can trust and flaunt.
- • **Lightweight & Packable Powerhouse:** Weighs just 2 lbs 6 oz and compresses down to a 13x7 inch stuff sack—carry less, explore more.

## Overview

The Kelty Cosmic 20 Down Mummy Sleeping Bag combines 550 fill power ethically sourced down with recycled shell and liner fabrics treated with PFAS-free durable water repellent. Designed for 3-season backpacking, it offers a temperature rating down to 21°F, lightweight portability at just over 2 lbs, and comes in three sizes to fit adventurers up to 6'6". With a heritage rooted in Colorado since 1952 and backed by a limited lifetime warranty, this sleeping bag delivers sustainable warmth and trusted performance for the modern outdoor enthusiast.

## Description

Kelty

## Features

- Recycled Nylon and Recycled Polyester Taffeta
- Imported
- A KELTY CLASSIC: The cosmic 20 has long been a staple of Kelty’s backpacking lineup and a favorite of campers worldwide with 550 FP compressible down, silky soft fabrics, dual direction zippers, the cosmic is built for comfort at the campsite
- PFAS FREE AS IT SHOULD BE: None of that toxic stuff here – Recycled nylon and polyester taffeta shell and liner fabrics to keep even more out of the landfill, finished with durable water repellent. Planet Earth approved
- SUSTAINABLE + TRACEABLE DOWN: Did we mention all our down is 100% ethically sourced and traceable via RDS? Info on product tag to trace each specific batch of down, Kelty means business when it comes to sustainability.
- 1952: Since Eisenhower was in the oval, Kelty has been designing camping gear in sunny Colorado. A founding member of The Conservation Alliance, Kelty continues to lead the industry with quality gear for your outdoor shenanigans on or off the trail
- THE DEETS: Each size up represents additional 6” of total length: Short fits sleepers up to 5’ 6”, Regular 6’, Long 6’ 6”. ISO limit rating 21 degrees, ISO extreme rating -11 degrees. Total weight about 2 lbs. 6 oz. (regular) stuffed size 13 x 7”

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Kelty |
| Color | Dark Blue |
| Occupancy | 1 Person |
| Shape | Mummy |
| Seasons | 3 Seasons |
| Temperature Rating | 20 Degrees |
| Age Range (Description) | Adult |
| Sport | Camping & Hiking, Backpacking |
| Special Feature | RDS Certified Down, Highly Compressible and Lightweight, Recycled Shell + Liner Fabrics |
| Material | PFC-free DWR, [shell] 20D nylon |
| Fill Material | Down |
| Product Dimensions | 78"L x 30"W |
| Closure Type | Zipper |
| Outer Material | Recycled 20D Nylon Taffeta |
| Fabric Type | Recycled Nylon and Recycled Polyester Taffeta |
| Size | Regular |
| Maximum Height Recommendation | 72 Inches |
| UPC | 727880887513 |
| Item Package Dimensions L x W x H | 12.5 x 8 x 7.5 inches |
| Package Weight | 1.16 Kilograms |
| Item Dimensions  LxWxH | 78 x 30 x 3 inches |
| Brand Name | Kelty |
| Warranty Description | Kelty Limited Lifetime Waranty |
| Model Name | Cosmic Down Mummy |
| Suggested Users | unisex-adult |
| Manufacturer | Kelty |
| Part Number | 35413724RR |
| Model Year | 2024 |
| Style | Updated Version |
| Included Components | Kelty Cosmic 20 Sleeping Bag, Kelty Limited Lifetime Warranty, Stuff Sack |
| Fill Material Type | Down |

## Product Details

- **Brand:** Kelty
- **Color:** Dark Blue
- **Occupancy:** 1 Person
- **Shape:** Mummy
- **Seasons:** 3 Seasons
- **Temperature Rating:** 20 Degrees
- **Age Range (Description):** Adult
- **Sport:** Camping & Hiking, Backpacking
- **Special Feature:** RDS Certified Down, Highly Compressible and Lightweight, Recycled Shell + Liner Fabrics
- **Material:** PFC-free DWR, [shell] 20D nylon

## Images

![Kelty Cosmic 20 Down Mummy Sleeping Bag for Backpacking, Campers, 550 Fill Power, Recycled Fabrics with PFAS-Free DWR, Designed in Sunny Colorado, - Image 1](https://m.media-amazon.com/images/I/51tiHd10hnL.jpg)

## Available Options

This product comes in different **Color, Size** options.

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-15*