Western Mountaineering AlpinLite 20°F Sleeping Bag Cranberry, 5 ft 6 in Left Zip

Meet the Western Mountaineering AlpinLite 20°F Sleeping Bag

The AlpinLite is a widened interpretation of a trusted ultralight classic. In cranberry, this sleeping bag blends sheltering warmth with a trim, expedition-ready silhouette. Built in the USA, it uses a lightweight 12 denier shell fabric that is water resistant, durable, and downproof, encasing 850+ fill power goose down for reliable loft.

At the core, a 3-dimensional full down collar and a full-length YKK zipper with an insulated draft tube work together to keep warmth in and drafts out. The bag features evenly spaced baffles that wrap from zipper to zipper, allowing you to shift down to fine-tune comfort across cool evenings and variable alpine conditions.

Warmth, comfort, and adjustability

• 20°F temperature rating with 5 inches of loft for breathable warmth on cool nights
• 19 ounces of 850+ fill power goose down deliver consistent warmth with light weight
• Full-length #5 YKK zipper, insulated draft tube, and a full down collar to minimize cold spots
• 5 1/4 inch spacing/continuous baffles encircle the bag from zipper to zipper for adjustable warmth

The result is a sleeping bag that balances warmth with space. It offers a comfortable width while preserving the efficiency needed for backpacking, with a focus on practical features that adapt to how you sleep and the night’s temperature.

Design and measurements that matter

• Total weight: 1 lb 13 oz
• Fill weight: 17 oz
• Inside girth: shoulder 63 inches, hip 56 inches, foot 39 inches
• Stuff sack size: 7 x 13 inches
• Length: 5 ft 6 in; left zipper for easy access

This AlpinLite model emphasizes versatility without sacrificing warmth. The shell’s denier provides durability in rugged environments, while the down’s loft and the camera-ready cranberry color add a touch of outdoor style. If you’re planning shoulder-season trips, variable alpine nights, or just seeking a roomy yet lightweight option, the AlpinLite offers a compelling blend of features designed to support comfort and reliability on the trail.

Made for demanding conditions, designed for real-life use

Whether you’re setting up under pines after a long day’s hike or pitching beneath a clear mountain sky, this bag aims to deliver dependable warmth, an efficient pack footprint, and a practical fit. The combination of a robust draft tube, a full down collar, and continuous baffles helps you tailor warmth without overpacking. It’s a capable companion for outdoor enthusiasts who value proven construction and thoughtful details.