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Biggreenbear.com

Ultralight Mummy Sleeping Bag | 3-Season Camping Gear

Ultralight Mummy Sleeping Bag | 3-Season Camping Gear

$59.99 USD
$59.99 USD
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Conquer the Outdoors: The Ultimate 4-Season Ultralight Mummy Sleeping Bag

Elevate your backcountry experience with a sleeping bag engineered for serious trekkers and casual campers alike. Designed to balance thermal efficiency with maximum mobility, this Mummy Sleeping Bag is your best defense against the elements, ensuring a restorative night's sleep whether you're under the stars or in a basecamp tent.

 

Why This is the Ultimate Mummy Bag

Unlike traditional rectangular bags that allow warm air to escape, our contoured mummy design follows the natural shape of your body. This minimizes "dead air" space, trapping heat more effectively while reducing overall pack weight. Whether you're navigating a humid summer trail or a frosty autumn ridge, this bag adapts to your environment.

 

Technical Specifications

  • Dimensions: 31.4" (Shoulder) | 26.37" (Hip) | 18.5" (Foot)
  • Temperature Range: 14°F to 59°F (-10°C to 15°C)
  • Optimal Comfort Limit: 32°F to 59°F (0°C to 15°C)
  • Weight: Ultralight 4 lbs (1.85kg)
  • Packed Size: Compact 10.23" x 15.74"
  • Outer Shell: 210T Soccer Plaid (Water-repellent & Tear-resistant)
  • Lining: 190T Pongee (Skin-friendly & Breathable)
  • Fill: Premium Hollow Cotton Fiber


Unboxing Your New Adventure: The BigGreenBear Mummy Bag Setup

Congratulations! You’ve just taken the first step toward a better night's sleep in the great outdoors. Follow this quick guide to ensure your Mummy Sleeping Bag is trail-ready from day one.

Step 1: The Reveal

Carefully open your BigGreenBear shipping package. Inside, you’ll find your sleeping bag tightly secured within its Heavy-Duty Compression Sack.

Step 2: Breaking the Seal

Locate the adjustable cinch straps on the side of the compression sack. Loosen these first to release the tension, then pull the drawstring top open. Slide the bag out—you’ll notice how impressively small it was packed!

Step 3: The "Loft" Phase (Important!)

Since your bag has been compressed for shipping, the Hollow Cotton filling needs a moment to breathe.
  1. Unroll the bag completely on a clean flat surface.
  2. Give it a few gentle shakes to help air circulate through the horizontal baffles.
  3. Wait 20–30 minutes. This allows the bag to "loft" to its full thickness, ensuring maximum thermal efficiency for your first night.
Step 4: Hardware Check

Test the Double SBS Anti-Snag Zippers. Run them up and down once to ensure smooth movement along the track. Check the hook-and-loop fastener at the top—this is designed to keep the zipper from sliding down while you sleep.

Step 5: Explore the Features
  • The Inner Pocket: Look inside the chest area for the dedicated accessory pocket—perfect for keeping your phone or headlamp warm and within reach.
  • The Hood Cinch: Pull the drawstring to see how the hood creates a cozy seal around your face to block out drafts.

Step 6: The "Trial Run"

Hop in! Feel the 190T Pongee lining—it’s designed to be soft against the skin, unlike the "sticky" feel of some budget nylon bags.


 Setup & "Installation"

  • Unpack: Remove the bag from the compression sack 30 minutes before bed to allow the hollow cotton fill to "loft" or fluff up.
  • Layout: Place on a sleeping pad for maximum insulation from the ground.
  • Adjust: Slide in and use the integrated drawstring to cinch the hood around your head, sealing in warmth.

 

Care & Maintenance

  • Spot Clean: Use a damp cloth for minor dirt.
  • Wash: Machine wash on a gentle, cold cycle only when necessary. Use a front-loading washer to protect the baffles.
  • Storage: For long-term storage, keep the bag loose or in a large mesh bag to maintain its loft.

 

What’s in the Box?

  • (1) Ultralight Mummy Sleeping Bag
  • (1) Heavy-Duty Compression Stuff Sack

 

Frequently Asked Questions (FAQ)

Is this bag waterproof?
The 210T outer shell is water-repellent, meaning it sheds dew, light rain, and condensation easily.
Can two of these be zipped together?
This specific model is designed as a high-performance single-person bag to maximize heat retention.
Will this fit tall adults?
With a length of 86.6 inches (220cm), this bag comfortably accommodates most adults up to 6'2".


The BigGreenBear Promise

Ready to stop shivering and start sleeping? This isn't just a piece of gear; it’s your ticket to the great outdoors. At BigGreenBear.com, we believe in quality that lasts through every summit and valley.

Shop with Total Confidence:
  • 30-Day Money-Back Guarantee: If it's not the best sleep you've had in the woods, send it back—no questions asked.
  • Fast & Secure USA Shipping: We ship directly from within the USA so you can get to the trailhead faster.
  • Battle-Tested Quality: From the reinforced SBS zippers to the tear-resistant shell, we build for the journey.
Grab yours today and experience the BigGreenBear difference!
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