Sea to Summit Altitude At Women's Sleeping Bag

Designed specifically for women to provide extra warmth when needed, you'll be prepared for unpredictable situations with our Altitude Sleeping Bag Series.

The Altitude series delivers optimal balance between comfort and weight. The special design offers more space than classic mummy-shaped sleeping bags, yet guarantees excellent thermal efficiency and can be used without hesitation when touring above tree line. The Free-Flow Triple-Zip system ensures high thermal efficiency and offers versatile ventilation settings. The half-zip on the left side provides ample clearance for both arms, additional ventilation, and allows the top third to fold back like a blanket. The full-length two-way zipper on the right side and separate zipper at the foot transform the sleeping bag into a full quilt when the mercury rises higher than expected.

Want warmth, close all zippers, pull cords together and relax in luxurious comfort. The generous use of high quality 750+ loft down provides excellent insulation, while the large sized zipper channels prevent body heat from escaping. The specially shaped foot box and three-dimensional hood ensure you don't squeeze the down. To accommodate women's warmth preferences, the Altitude also features extra down and THERMOLITE® layers under the foot box to keep heels and ankles warmer.

Vertical chambers over the chest area ensure that the down insulation doesn't migrate during sleep, creating cold spots. A side chamber barrier maintains the 60/40 fill ratio and keeps more down on the top of the sleeping bag for maximum insulation.

Our Tapered Rectangular design provides ample room in the sleeping bag and is ideal for side or restless sleepers. A true alternative to the typical mummy cut. The women's specific fit is wider at the hip and narrower at the shoulder and comes in two lengths.

Features

• Women's specific tapered rectangular cut at the bottom for a perfect combination of space and customizable warmth
• More down and THERMOLITE® in the foot area for warmth
• Super lightweight 20D nylon shell provides minimal pack size and maximum breathability
• RDS 750+ loft ULTRA-DRY down for excellent insulation
• Vertical chambers in the chest area optimize down distribution and prevent cold bridges
• Large zipper channels with anti-kink prevent body heat from escaping
• Half-sided free-flow zipper on the right side and a full-sided #5 YKK zipper on the left side, as well as the separate zipper at the footbox, grant free space, improved ventilation and versatile use
• oversized thermal collar with dual adjustment system
• Generously sized hood and dual drawcords for maximum heat retention
• Anatomically shaped footbox allows for maximum down lofting and minimizes heat loss through the feet
• Large inner pocket