Sea To Summit Spark SpI

All Spark sleeping bags are characterized by their ultra-light weight, minimal pack size and excellent thermal performance. The quilted construction of the SpI minimizes weight and the vertical chambers in the chest area optimize the distribution of the down and prevent slippage. The half-zip allows for easy entry without adding unnecessary weight. Optimized sizing provides more room at the shoulders. UltraDry Down is a PFC-free, water-repellent down treatment used in all Sea to Summit sleeping bags. UltraDry Down retains over 60% more fill power, absorbs 30% less moisture, and dries out 60% faster than untreated down - meaning the down insulates better even when damp. The treatment also inhibits bacterial growth and extends the life of your sleeping bag. UltraDry Down treatment is an environmentally friendly application. Down blend (down / feather): 90 / 10. Bulking power (cuin): 850 cuin. Ultralight 7D and 10D material for minimal weight and pack size. RDS certified 850+ loft premium goose down with Ultra-Dry. Down treatment for maximum insulation values. Contoured mummy shape ensures efficient insulation. Vertical chest chambers protect against cold spots. Note: Cannot be zipped together with other sleeping bags. Season: Summer. Filling: Ultra-Dry Down. Shell designation: 100% nylon. Special features: Contains non-textile parts of animal origin. Lining material designation: 100% nylon. Filling: duck down. Body height (max): 192 cm. Comfort temperature (°C): 9 °C. Limit temperature: 5 °C. Extreme temperature: -9 °C.