Sea to Summit Spark Pro 900+ Sleeping Bag

The Sea to Summit Spark Pro sleeping bag is engineered for adventurers who demand ultralight performance without sacrificing comfort or versatility. Designed with premium materials and innovative features, the Spark Pro delivers exceptional warmth-to-weight efficiency for fast-and-light pursuits, from alpine missions to multi-day trekking.

Filled with ultra-premium 900+ fill power RDS-certified goose down, the Spark Pro offers outstanding loft and insulation while maintaining an incredibly low weight. The non-PFAS Ultra-Dry Down treatment enhances moisture resistance, helping the insulation retain its performance in damp conditions. Wrapped in highly breathable 10D fabrics, this sleeping bag ensures optimal airflow and comfort throughout the night.

The Free-Flow Zip system provides unmatched adaptability, allowing you to fine-tune ventilation or fully open the bag into a quilt for warmer conditions. For added versatility, the Spark Pro can be zipped together with a women’s-specific Spark sleeping bag, making it a perfect option for shared adventures.

FEATURES:

• RDS-certified, 900+ fillpower goose down with a non-PFAS Ultra-Dry Down treatment for maximum thermal performance
• Featherweight 10D nylon shell with non-PFAS DWR, and a highly breathable 10D nylon liner for enhanced comfort
• Technical hood, anatomical footbox and an ergonomic mummy shape - ultralight doesn't have to mean ultratight
• Free-Flow Zip System:
  YKK #5 side zipper with zipper plough for reliable, snag-free operation. YKK #3 footbox and shoulder zipper for minimal additional weight
• Vertical chest baffles, horizontal baffles lower half and base, box wall baffle construction throughout
• Front draft collar is fitted around the neck and oversized at the shoulders to retain warmth

SPECIFICATIONS:

Materials:

• Shell: 100% nylon
• Lining: 100% nylon
• Down Fill: 90/10 Goose Down
• Stuff Sack: 100% nylon - excluding trims

Insulation: RDS certified, 900+ fillpower goose down with a non-PFC Ultra-Dry Down treatment