Spark -1C/30F Down

Sea To Summit

Spark -1C/30F Down

Name: Spark -1C/30F Down
Brand: Sea To Summit
SKU: SEAT00800
Price: 449.9 EUR
Availability: InStock

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Natural down sleeping bag - Spark -1C/30F Down - Sea to Summit - 2026

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Spark -1C/30F Down

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Description

The sleeping Spark -1C/15F Down bag from Sea to Summit is ideal for adventurers who prioritise comfort when expedition conditions become extreme.

The shape of this model has been designed to fit your body shape perfectly, with a resized Hood and improved zips. Ultra-lightweight, it has an exceptional weight-to-Warmth ratio, with a fill power of 850+. Compact, this minimalist bag is perfect for long hikes and offers an excellent compromise between volume and performance.

The sarcophagus shape helps to retain maximum heat, and it is also made fromRDS 850 CUIN down that has undergone a treatment Ultra-Dry™ to make it resistant to moisture, ensuring it maintains its performance in all conditions. Its very lightweight 10D Nylon structure ensures minimal bulk and good breathability. For your comfort, the Spark has sewn-in structures at the torso that prevent it from slipping during the night. This model features a half-length zip and a draft excluder incorporated into the zip to prevent heat loss.

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Technical details

Comfort temperature

Best of Snowleader

Sleeping bag shape

Mummy

Insulation type

Down

Use - sleeping bag

Trekking

Overview

Brand

Sea To Summit Sea To Summit-logo

Warranty

Year

2026

Season

Spring

Gender

Unisex

Product details

Weight (g)

536

Shoulders (cm)

Feet (cm)

Length (cm)

198

Compressed volume

Technical details

Composition

Nylon 10D, Duvet naturel certifié RDS

Zip side

Droit , Gauche

Seasons

Combinable

Performance

Extreme temperature

-17

Comfort temperature limit

-1

Use type

14605 , 14606

Filling

Down

Other features

- Optimal heat-to-weight ratio
- Moisture-resistant nib
- 2 closing systems
- Adjustable drawstring hood
- Roof covering attachment Quilt Lock system
- Half-length main zip with zip guard and 2 sliders
- PFC-free product

Composition :
- Filling : 850 CUIN goose down
- Outer material and Lining: 10D Nylon

Size	Regular	Wide
Dimensions (cm)	185 x 155	198 x 165
Volume compressé (L)	9.9	10.6
Poids (g)	1113	1204
Poids du garnissage (g)	840	945

Responsible Down Standard (RDS)	100% of the down used in our sleeping bags and duvets is independently certified according to the RDS standard (Responsible Down Standard). The RDS certifies animal welfare requirements and traceability from source to final product. Purchasing RDS-certified products demonstrates demand for better animal welfare practices in the down and feather supply chain. Sea to Summit is RDS certified.
850+ loft Ultra-Dry Down	850+ Fill Power indicates that one ounce (30g) of down will re-expand to over 850 cubic inches after compression. A higher fill power means that less down is used to achieve the same temperature, which is important for high-performance sleeping bags. The loft and the quality/composition of the down are independently tested by the International Down and Feather Laboratory (IDFL) - a copy of the certification is provided with each sleeping bag Sea to Summit. The down comes from a responsible source, is RDS certified and is treated with our PFC-free Ultra-Dry Down™ treatment.
Quilt Lock System	The system QuiltLock uses the press studs located on the shoulders and feet of the sleeping bags Sea to Summit, as well as the straps, quilt / footbox to attach a quilt to the sleeping bag. This adds thermal performance and versatility to your sleeping system: your integrated duvet now works for ultralight summer adventures and transforms your three-season sleeping bag into a four-season sleeping system.