The Spark Pro has been optimized for comfort, versatility and light weight. Our highest-lofting down - 900+ fillpower RDS-certified goose down with a non-PFAS Ultra-Dry Down treatment - is wrapped in extremely breathable 10D fabrics. The Free-Flow Zip system ensures maximum ventilation and the flexibility to open the bag flat as a quilt. Zip a Spark Pro to a Women's Spark and share the comfort with your companion.

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
• Sea to Summit Guarantee is offered for the Lifetime of this product