Alpine™ UL1100 Mummy Down Sleeping Bag -6.5°F/ -21.4°C
Alpine™ UL Professional Mummy Down Sleeping Bag with 850FP white goose down and thermal-efficient triangular baffle construction — delivering scientifically tested warmth for extreme cold conditions, engineered for serious mountaineers and winter backpackers.
Key Features
Premium 850FP White Goose Down Insulation：Filled with 95% high-quality 850FP white goose down, certified by RDS (Responsible Down Standard) and independently tested for fill power (865 in³), loft, and purity — delivering exceptional warmth-to-weight ratio for extreme alpine conditions.
Triangular Baffle Construction for Maximum Thermal Efficiency：Engineered with triangular baffle design that keeps down evenly distributed, prevents cold spots, and promotes faster lofting — achieving the same warmth as traditional square baffle systems with significantly less fill weight, as validated by lab testing.
Scientific Temperature Ratings with ISO Standards：Thermal values precisely measured using a heated manikin system in accordance with ISO 23537 — providing reliable comfort, limit, and extreme temperature references you can trust for backcountry decision-making.
Premium Materials & Thoughtful Details：Outer and lining crafted from 10D 500T down-proof calendered nylon with a sleek finish, featuring a YKK anti-snag zipper, Duraflex buckles, a warm hood with drawcord adjustment, and an interior storage pocket — every detail built for reliability in harsh conditions.
Compact Packability with Versatile Storage Options：Includes three storage solutions — mesh storage bag for long-term loft preservation, stuff sack for travel, and compression sack for space-saving packability — so you can choose the right balance of volume and protection for your adventure.
Thank you for your order!
- We'll process your order within 2 business days of receiving payment.
- If any issues arise, we'll notify you promptly.
Estimated delivery times:
- Local warehouse: 5–10 business days
- China warehouse: 10–18 business days(may vary by region)
Please note: to ensure your tracking number remains valid—especially on China-origin shipments that may generate intermediate tracking numbers—there may be a short delay before we upload it. We appreciate your patience and support!
We Believe in What We Build
At NATUREHIKE, we understand the importance of reliable gear in the backcountry. That’s why our products are engineered to meet the highest quality standards and rigorously tested before reaching you.
Return & Exchange
Conditions of return
- Returns must be made within 7 days of receipt.
- Items must be new, unused, and in original condition.
- Includes all original tags, packaging, and components.
- Proof of purchase is required.
Damaged Items
If your product arrives damaged due to packaging issues, please contact us within 3 days of receipt, and we will arrange a replacement.
Warranty
If you encounter an issue covered by the NATUREHIKE Limited Warranty, please contact our team for assistance. We’re here to help you get started.
