---
product_id: 392953255
title: "KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack"
brand: "kelty"
price: "VT57261"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/392953255-keltycosmic-40-degree-down-sleeping-bag-550-fill-down-backpacking
store_origin: VU
region: Vanuatu
---

# Ultralight 1.9 lbs 550 Fill Power 40°F Comfort KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack

**Brand:** kelty
**Price:** VT57261
**Availability:** ✅ In Stock

## Summary

> 🌌 Sleep Like a Star in the Great Outdoors!

## Quick Answers

- **What is this?** KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack by kelty
- **How much does it cost?** VT57261 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/392953255-keltycosmic-40-degree-down-sleeping-bag-550-fill-down-backpacking)

## 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-Friendly Comfort:** Sustainably sourced 550 fill DriDown insulation keeps you warm while being kind to the planet.
- • **Stay Toasty in Style:** Trapezoidal baffle construction enhances thermal efficiency for a cozy night's sleep.
- • **Kelty's Trusted Quality:** Crafted with care since 1952, this sleeping bag is built to withstand the test of time.
- • **Versatile Zipper Design:** Dual zippers with anti-snag draft tube allow for customizable ventilation and easy access.
- • **Budget-Friendly Adventure:** Perfect for both first-time campers and seasoned backpackers without breaking the bank.

## Overview

The Kelty Cosmic 40 Degree Down Sleeping Bag is an ultralight, 550 fill down sleeping bag designed for backpacking and camping. Weighing just 1.9 pounds, it features a unique trapezoidal baffle construction for improved thermal efficiency, dual zippers for ventilation, and is made from eco-friendly materials. Perfect for adults up to 79 inches tall, this sleeping bag is a reliable choice for three-season adventures.

## Description

KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack

## Features

- TRAPEZOIDS, MAN: Turns out this funky shape is ideal for helping sleeping bags retain heat. Trapezoidal baffle construction improves our best selling Cosmic sleeping bag for 2021. Fan favorite and campsite staple with improved Thermal Efficiency
- GET DOWN: Light, compressible, warm to boot; what’s not to love about Down Fill? The Cosmic features 550 fill Kelty treated DriDown insulation, with sustainably sourced materials that are easy to pack, use, dry, and keep your buns toasty.
- ENTRY LEVEL VETERAN: Priced even lower for 2021, the Cosmic is more budget friendly than ever while retaining it’s well deserved reputation for a do-it-all backpacker’s slumber companion. First time campers and old timers rejoice
- DUAL ZIPPERS: Two sliding, locking zippers with anti-snag draft tube - unzip from the bottom to stick a foot out and self-regulate heat while enjoying mummy-bag comfort. Zippered internal stash pocket for cell phone or headlamp
- KELTY QUALITY: Good craftsmanship speaks for itself. Since 1952 Kelty has designed and manufactured quality, useful, and durable goods for the everyman (and woman) seeking to enjoy life outside. Headquarters in Colorado, USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age Range | Adult |
| Color | Castle Rock/Smoke |
| Size | Long |
| Style | Long |
| insulation-material-type | Down |
| Height | 8 inches |
| Length | 15 inches |
| Weight | 1.9 Pounds |
| Width | 9 inches |
| Shape | Mummy |
| Material Type | nylon Poly Taffeta |
| Maximum Height Recommendation | 79 Inches |
| Number of Items | 1 |
| Outer Material | Nylon |
| Season | 3 Seasons |
| Features | Quilt-through construction, Lightweight and warm 550 fill down, Environmental and health friendly C0 and PFC-free DWR fabrics, Zippered internal stash pocket, Buttery-soft and durable 20D Nylon shell fabric, Slider for ventilation with locking zippers, Natural fit spacious footbox, Comes with stuff sack |
| Sport | Backpacking, Camping and Hiking |
| Included Components | Kelty Cosmic 40 Degree Down Sleeping Bag, Stuff sack |
| Batteries Included? | No |
| Brand | Kelty |
| fill material type | Down |
| Department | unisex-adult |
| Manufacturer | Kelty |
| Item model number | 35414821LR |
| Product Dimensions | 198.12 x 76.2 x 7.62 cm; 839 g |
| ASIN | B08MJ4Q9T6 |

## Product Details

- **Brand:** Kelty
- **Colour:** Castle Rock/Smoke
- **Occupancy:** 1 Person
- **Shape:** Mummy
- **Seasons:** 3 Seasons

## Images

![KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack - Image 1](https://m.media-amazon.com/images/I/61Q1kBcVbmS.jpg)
![KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack - Image 2](https://m.media-amazon.com/images/I/81cRHPxTCXL.jpg)
![KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack - Image 3](https://m.media-amazon.com/images/I/71Z+BuLd5jS.jpg)
![KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack - Image 4](https://m.media-amazon.com/images/I/A1sBBP91uZL.jpg)
![KeltyCosmic 40 Degree Down Sleeping Bag 550 Fill Down Backpacking Sleeping Bag, 2021 Ultralight Backpacking Camping Sleeping Bag with Stuff Sack - Image 5](https://m.media-amazon.com/images/I/91LE1dt9lzL.jpg)

## Available Options

This product comes in different **Style** options.

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-10*