Sea to Summit Women's Ascent Down -9C Sleeping Bag

In colder temperatures, cinch down the technical hood, zip up the draft-tube protected zippers and allow the 750+ Ultra-Dry Goose Down to keep you warm. As temperatures rise, unzip the Free-Flow Zip system for additional ventilation, or completely unzip to be a quilt for use during the extra-warm nights. The Ascent sleeping bag is one of very few true three-season backcountry bags available. You can even close the snaps at the shoulders, open the footbox zipper, and wear the Ascent at camp, giving you real freedom on your backpacking adventures.

Weight: Lightweight | Packability: Compact | Climate: Cold

• Women's-Specific: Women's-specific shape, and body-mapped insulation, for increased heat-retention for SLEEPING BAG FEATURES
• 3-Season Performance: Suitable for a range of temperatures and conditions; versatile for various backcountry adventures
• Technical Hood: Traps in head around the head and neck, critical for cold-weather conditions
• RDS-certified, 750+ fill power goose down, with a non-PFAS Ultra-Dry Down treatment to stay drier in damp conditions
• Free-Flow Zip System offers excellent temperature regulation, and multiple sleeping bag configurations
• Women's-specific fit is narrower at the shoulders (for reduced weight), and wider between the hips and knees, to allow for a natural, side-sleeping position
• Anatomical footbox is constructed for improved warmth-retention
• Lightweight 20D recycled nylon shell with a non-PFAS DWR finish to protect against wind and moisture and a 20D recycled nylon liner for greater comfort
• Box baffle construction throughout, with vertical baffles in the torso, to minimize down shift and maximize the retention of warmth
• Sea to Summit Guarantee is offered for the Lifetime of this product from the manufacturer
• 750+ Loft Ultra-Dry Down: 750+ Fill Power indicates that one ounce (30g) of down will re-expand to over 750 cubic inches after compression | The higher the Fill Power, the more the down will insulate for a given weight. This means that less down can be used to achieve the same temperature rating. 750+ goose down represents a good balance between insulation and packability | Every Sea to Summit down sleeping bag comes with a test report from the International Down and Feather Laboratory IDFL confirming the down loft and quality. All of Sea to Summit's down is RDS certified responsibly sourced, and hydrophobically treated with a non-PFAS Ultra-Dry Down finish
• Free Flow Zip: Sea to Summit's Free Flow zip design ensures your sleeping bag retains maximum warmth when needed, and offers multiple ventilation options in warmer temperatures. The half-zip on the right side of the bag (left side on women’s bags) provides freedom of movement for both arms, offers additional ventilation, and allows the top third of the bag to be folded down | Most Free Flow sleeping bags can be opened completely flat as a quilt
• Quiltlock System: The QuiltLock™ system uses the snap locks located at the shoulder and foot end of Sea to Summit sleeping bags, plus the quilt footbox / quilt straps to secure a quilt to the sleeping bag. This adds thermal performance and versatility to your sleep system: your integrated quilt now works for ultralight summer adventures and turns your three-season bag into a four-season sleep system.
• Responsible Down Standard (RDS): 100% of the down used in Sea to Summit's sleeping bags and quilts is independently certified to the Responsible Down Standard (RDS). The RDS certifies down against animal welfare requirements, and tracks it from the source to the final product | The purchase of RDS certified products demonstrates demand for better animal welfare practices in the down and feather supply chain. Sea to Summit is certified to the RDS
• Women's-Specific Shape: Engineered differently than Unisex models, to provide women adventurers with the best possible sleep | They have a shape that is narrower at the shoulder, then widest between the hips and knees, to permit a natural side or ‘figure four’ sleeping position. Women’s-specific body mapping deploys insulation for warmth where it is most needed. Additionally, the Journey and Altitude down bags have a layer of Thermolite synthetic insulation in the footbox to warm your feet more quickly
• Non-PFAS: Sea to Summit sleeping bag fabrics and insulation are made without PFAS compounds. The non-PFAS DWR finish on the shell helps prevent the insulation from becoming damp if the bag comes into contact with moisture, such as tent wall condensation. Ultra-Dry Down is a non-PFAS hydrophobic treatment that absorbs less moisture and dries more quickly. It does not affect the 'breathability' or the lifespan of the down, and lasts through at least 20 washings. The down used in our sleeping bags is responsibly-sourced