Sea To Summit Spark -1C woman sleeping bag with feather 2024

The Spark sleeping bag for women is the perfect option for lightweight adventures.

Designed specifically for women, the added warmth and heat retention offer versatility and functionality. With an optimal warmth-to-weight ratio, the Spark sleeping bag for women is as compact as it is comfortable.

Features

• Ultra Dry Down treated goose down for increased water resistance in wet conditions.
• Made from 10-denier nylon fabric for shell and lining, these lightweight fabrics offer breathability, protection and effective temperature regulation for optimal outdoor comfort.
• The waterproof and breathable characteristics of 10D nylon offer additional protection and prevent condensation exposure of the tent walls.
• The Mummy shape maximises thermal efficiency and offers better heat retention with a lightweight design for warmth, compactness and outdoor comfort.
• Insulation: 850+ RDS-certified goose down, treated with Ultra Dry Down for increased water resistance in wet conditions.
• Fabric: 10-denier nylon shell and lining. Hood and foot compartment in waterproof, breathable 10-denier nylon.
• Cut: Tight-fitting cut with generous foot compartment and technical hood to maximise thermal efficiency and minimise volume and weight. Wider at the hips and narrower at the shoulders for a better fit and heat retention for women.
• Zip: Spark Women's 7C/45F & 1C/30F Main zip - 1/2 length #5 with slider cover flap and two sliders. Spark Women's -9C/15F Main zip - 3/4 length #5 with slider cover flap and two sliders.
• Sector construction: SPARK WOMEN'S 7 Vertical sectors on chest, horizontal sectors on lower half and base, quilted construction sewn along entire length. SPARK WOMEN'S -1 Vertical sectors on the chest, horizontal sectors on the lower half and base, box-shaped sectors on the upper half of the sack and quilted construction sewn onto the lower half. SPARK WOMEN'S -9 Vertical sectors on chest, horizontal sectors on lower half and base, box-shaped sector construction across body.
• Collar: Spark Women's 7C/45F & -1C/30F Standard collar. SPARK WOMEN'S -9 Double draft collar.
• Hood: Close-fitting technical hood with soft touch adjustment. Extra deep for a comfortable feel.
• Anti-breath tube: Unique feather-filled anti-breath tube along the top of all zips.
• Bag coupling: Compatible with unisex Sea to Summit bags.
• Maximum user size: R: < 170 cm / L: < 185 cm
• Total manufacturer weight: R: 584 g / L : 639 g
• Filling manufacturer weight: R: 375 g / L : 430 g
• Filling bag size: R : 5 L / L : 8 L

Technologies

Specific shape for women
Our women's specific bags feature a distinctive shape designed to offer greater comfort and maximum thermal efficiency. The models fit women's shape perfectly - slightly narrower at the shoulders and roomier at the hips. The down distribution is perfectly adapted to ensure that the torso and feet stay warm.

Ultra-Dry 850+ Loft Down
The highest performing down used in all Sea to Summit sleeping bags. The 850+ loft means that one ounce (30g) of down will re-expand to over 850 cubic inches when compressed. A higher loft means that less down can be used to achieve the same temperature, which is important for performance sleeping bags. The loft and quality/composition of the down is 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 the snap locks on the shoulder and foot ends of Sea to Summit sleeping bags, as well as the duvet footbox and duvet straps to secure a duvet to the sleeping bag. This adds thermal performance and versatility to your sleeping system: your integrated duvet now works for ultralight summer adventures and turns your three-season bag into a four-season sleeping system.

Responsible Down Standard (RDS)
All the down used in our sleeping bags and duvets is independently certified to the Responsible Down Standard (RDS). The RDS standard certifies down against animal welfare requirements and tracks it from source to final product. The purchase of RDS certified products demonstrates the demand for better animal welfare practices in the down and feather supply chain. Sea to Summit is RDS certified.