Sea to Summit Ascent Women's Down Sleeping Bag, 30-Degree, Long

Three-Season Versatility with a Tailored Women's Fit

In cooler temperatures, cinch down the technical hood and zip up draft-tube protected zippers as the 750+ fill power Ultra-Dry goose down works to keep you warm. The Ascent sleeping bag is one of the few true three-season backcountry bags, designed specifically for women who value warmth without unnecessary weight and a natural, comfortable sleeping position.

Adaptive warmth and ventilation

When temperatures dip, the bag’s structure and down work together to trap heat where you need it most. As night cools, you can close the shoulder snaps for a snug mummy-like feel while still allowing freedom around the hips and knees for a more natural side-sleeping position.

• Full-zip options enable ventilation when conditions shift
• Partial unzip converts the bag into a breathable quilt for warm evenings
• Shoulder snaps provide a flexible warmth profile without sacrificing mobility

Key features that matter on the trail

The bag uses a lightweight 20D recycled nylon shell with a non-PFC DWR finish to fend off wind and moisture, paired with a 20D recycled nylon liner for comfort. Box baffle construction with vertical torso baffles minimizes down shifting, helping warmth stay where it belongs. A true three-season backcountry companion, backed by Sea to Summit’s lifetime guarantee.

• RDS-certified 750+ fill power goose down with Ultra-Dry Down treatment for drier warmth in damp conditions
• Free Flow Zip System for excellent temperature regulation and multiple configurations
• Women’s-specific fit: narrower shoulders, wider hips and knees for a natural side-sleeping position
• Anatomical footbox designed to retain warmth and improve foot warmth and comfort
• Lightweight 20D recycled nylon shell with non-PFC DWR and 20D liner for comfort and protection
• Box baffle construction with vertical torso baffles minimizes down shift for consistent warmth
• Lifetime Sea to Summit Guarantee for peace of mind on long-term use

Practical use cases

Whether you’re backpacking through shoulder seasons or camping at a base camp after a long day’s hike, the Ascent adapts to your night. In warm conditions you can unzip fully for a quilt-like experience, while in colder nights you’ll appreciate the hood, draft protection, and the warmth of the down.

• Backcountry trips where one bag covers multiple seasons
• Morning camp routines with quick hood cinching to cut drafts
• Lightweight gear choices that don’t compromise warmth and comfort

In sum, the Sea to Summit Ascent Women’s Down Sleeping Bag blends thoughtful temperature regulation with a female-focused cut, offering adaptable warmth and comfort for a wide range of three-season nights beneath the stars.