Sea To SummitSea To Summit Spark SP1 Long Light Grey/Yellow

Spark SP1 Long from Sea To Summit is an ultra-light, technical mid-winter down sleeping bag. Made in a combination of premium materials with RDS 850+ Loft premium goose down, Nylon shell and 7D lining fabrics with a contoured mummy design for efficient insulation. Ultra-Dry Down with water-repellent treatment to protect the down from external moisture and condensation from the inside of the bag, virtually eliminating the negative effects moisture has on down. A hard-alpine or adventure racing bag, where every gram is counted and down has never been a viable option.