0 Degree Cotton Canvas Mummy Backpacking Sleeping Bag

Master the Cold: The BigGreenBear™ Elite 4-Season Canvas Mummy Sleeping Bag

Stop dreading the drop in temperature. Whether you're alpine trekking or deep-woods hunting, the BigGreenBear™ Elite Mummy Bag is your ultimate thermal sanctuary. Engineered with a heavy-duty canvas shell and cutting-edge graphene technology, this isn't just a sleeping bag—it's professional-grade survival gear designed for the modern explorer.

Why BigGreenBear™ is the Hunter’s Choice

• SGS Certified Warmth: Rigorously tested to keep you comfortable down to 14°F, ensuring a restorative sleep in sub-freezing conditions.
• Indestructible Shell: The water-resistant cotton canvas outlasts standard nylon bags, resisting tears from brush and dampness from frozen ground.
• Graphene Technology: Our interior lining uses graphene-infused pongee to reflect your body heat back to you, boosting thermal efficiency by 30%.
• The YKK Standard: Equipped with genuine double-headed YKK zippers for snag-free operation and custom ventilation.

Technical Specifications

• Temp Rating: 14°F to 46°F (SGS Certified)
• Shape: Tapered Mummy (Ergonomic Tunnel-Shape)
• Unfolded Size: 86.6"L x 31.5"W (Fits most adults comfortably)
• Compressed Size: 16.5" x 13" x 5.9"
• Weight: 5.3 lbs
• Materials: Water-Resistant Canvas Shell / Graphene Pongee Interior / Hollow Fiber Fill.

What’s in the Box?

• BigGreenBear™ Elite Mummy Bag: Tapered for maximum heat retention.
• Canvas Compression Sack: Heavy-duty drawstring bag with reinforcement straps.
• Owner’s Field Guide: Care instructions and cold-weather tips.

Caring for Your Elite Canvas Bag

• Spot Clean First: Avoid full immersion whenever possible. Use a damp cloth with mild, scent-free soap to clean the canvas shell.
• Air Dry Only: Never put your bag in a commercial dryer. Hang it to air dry out of direct sunlight to maintain the integrity of the graphene-infused lining.
• Storage Matters: Between trips, store your bag loosely in a large cotton sack or hanging up. Only use the compression sack during active travel to keep the hollow-fiber insulation "lofty" and warm.
• Canvas Care: For long-term water resistance, you can occasionally re-treat the exterior with a canvas-safe waterproofing spray.

Claim Your Thermal Sanctuary Today

• 30-Day Money-Back Guarantee: If it isn’t the warmest, toughest bag you’ve ever owned, send it back—no questions asked.
• Fast & Secure Shipping: We ship directly from our warehouse to your door with end-to-end tracking, ensuring your gear arrives before your next sunrise.