Sea To Summit Ascent -9C sleeping bag with feather

The Ascent sleeping bag for women is the most versatile in our range and suitable for a variety of climates, conditions and adventures.

From long hikes to weekend getaways, the ultra-lightweight 750+ fill power provides extra warmth in cooler climates, while the Free Flow zip system allows for increased air circulation and ventilation in warmer climates. Putting comfort and adaptability first, the Ascent sleeping bag is a premium choice for versatile adventures.

Features

• Goose down with Ultra Dry Down treatment for increased water resistance in wet conditions.
• The Free Flow Zip system offers temperature regulation and different sleeping bag configurations for more freedom outdoors.
• With a roomy design, an adjustment cord and space to accommodate a standard Sea to Summit pillow, the Technical Regular Hood offers comfort and flexibility for car camping and shorter adventures.
• Insulation : 750+ RDS-certified goose down, treated with Ultra Dry Down for increased water resistance in wet conditions.
• Fabric : Shell and lining in 20 denier recycled nylon. Hood and foot compartment in waterproof and breathable 10 denier nylon.
• Fit : Relaxed mummy cut: a slightly more relaxed but tapered fit with high thermal performance.
• Zip : Free Flow zip system: Main zip - full length #5 with protective flap and two sliders. Secondary zip - 1/2 length #5 with protective flap and two sliders. Foot compartment zip - #5 with protective flap and two sliders.
• Chamber structure : Vertical chambers on top, horizontal chambers on lower half and base, box-type wall structure along entire length.
• Collar : Close-fitting windproof front collar: contoured on the neck and oversized on the shoulders.
• Hood : Generously fitting hood with two tactile adjustments. Fits a regular-sized Sea to Summit pillow.
• Windproof tube : Unique down-filled windproof tube along the top of all zips.
• Bag coupling : Fits Sea to Summit women's bags.
• Pillow integration : The regular-sized Sea to Summit pillow fits into the hood.
• Maximum user size: R: < 185 cm / L: < 198 cm
• Total weight: R: 1020 g / L: 1157 g
• Padding weight: R: 540 g / L: 617 g
• Compressed bag size: 13 L

Technologies

Duvet Ultra-Sec 750+ Loft
The second highest performing down used in all Sea to Summit sleeping bags. The filling power of 750+ means that one ounce (30 g) of down will expand by more than 750 cubic inches after compression. A higher filling power means that less down can be used to achieve the same temperature, which is important for performance sleeping bags. The loft and down quality/composition are independently tested by the International Down and Feather Laboratory (IDFL) - a copy of the certification is supplied with every Sea to Summit sleeping bag. The down is responsibly sourced, RDS certified and treated with the environmentally friendly Ultra-Dry Down treatment.

Quiltlock System
The QuiltLock system uses pressure clips placed at the shoulder and foot ends of Sea to Summit sleeping bags, along with the down foot box and down straps, to attach a down to the sleeping bag. This adds thermal performance and versatility to your sleeping system: your integrated duvet now works for ultra-light summer adventures and turns your three-season sleeping bag into a four-season sleeping system.

C0 DWR
Most of our products have already switched to PFC-free C0 water-repellent finishes. Our goal is to use 100 per cent PFC-free C0 water-repellent finishes by 2025.

Responsible Skin Standards (RDS)
All down used in our sleeping bags and quilts is independently certified according to the Responsible Down Standard (RDS). The RDS standard certifies down according to animal welfare requirements and guarantees its traceability from source to finished product. Purchasing RDS certified products demonstrates the demand for better animal welfare practices in the down and feather down supply chain. Sea to Summit is RDS certified.