Spark Down Sleeping Bag -1C

Sea to Summit Spark Down Sleeping Bag -1°C Regular

The Sea to Summit Spark Down Sleeping Bag -1°C Regular is an ultralight down sleeping bag for backpacking, hiking, and tours where low weight and small pack volume are important. The sleeping bag is filled with RDS-certified goose down with 850+ fill power and treated with non-PFAS Ultra-Dry Down™ to provide high thermal efficiency even in humid conditions. The technical hood, zipper draft tube, and ergonomic mummy shape help retain warmth without making the sleeping bag unnecessarily cramped. With a 10D outer fabric, super-light 10D inner lining, and a compressed volume of 4.5 liters, the Spark -1°C is a highly packable choice for lightweight adventures in spring, summer, and early autumn.

Features

• Ultralight down sleeping bag for backpacking and hiking
• Temperature rated to -1 °C according to ISO Lower
• Filled with RDS-certified 850+ fill power goose down
• Non-PFAS Ultra-Dry Down™ treatment improves down's moisture resistance
• 10D nylon outer fabric with non-PFAS DWR protects against wind and condensation
• Super-light and breathable 10D inner lining provides high sleeping comfort
• Technical hood helps retain warmth
• Zipper draft tube reduces heat loss along the zipper
• Anatomical footbox provides better comfort and warmth around the feet
• Ergonomic mummy shape provides efficient warmth without being unnecessarily tight
• YKK #5 zipper with zipper plough for smooth and snag-free use
• Hybrid box baffle construction in the torso and sewn-through construction in the leg area
• Compresses very small to save space in the backpack
• Made with non-PFAS materials and responsibly certified down

Specifications & Materials

• ISO Lower temperature rating: -1 °C
• ISO Comfort temperature rating women: 4 °C
• Recommended body length: up to 185 cm
• Weight: 493 g
• Packed weight according to product page: 558 g
• Fill weight: 265 g
• Compressed volume: 4.5 liters
• Zipper coupling: No
• Insulation: RDS-certified 850+ fill power goose down
• Down blend: 90/10 goose down
• Down treatment: Ultra-Dry Down™, non-PFAS
• Outer fabric: 100% nylon, 10D with non-PFAS DWR
• Inner lining: 100% nylon, 10D
• Stuff sack: 100% nylon, excluding details
• Zipper: YKK #5 with zipper plough
• Construction -1 °C: Hybrid box baffles in the torso and sewn-through construction in the leg area
• Technologies: 850+ Loft Ultra-Dry Down™, QuiltLock System, Responsible Down Standard and non-PFAS
• Use: Backpacking, hiking, mountain tours, lightweight packing, and three-season tours

Variant Overview

If you order before 10:30 AM on a weekday, the order is usually shipped the same day. In-store pickup can be made on the same day during store opening hours if the item is in the store's stock.

Free shipping on orders over 595 SEK (up to 20 kg). Free returns. 14-day right of withdrawal