Sea to Summit Spark Women's Ultralight Down Sleeping Bag

- Nylon - Imported - Women's 30-degree Fahrenheit (-1-degree Celsius) ultralight down sleeping bag for for 2-season backpacking, bike packing, and touring; broad mummy shape features hood and zipper draft tubes - 850+ fill power down insulation (Responsible Down Standard certified) treated with Ultra-Dry Down to improve reaction to moisture, retaining loft and performance - Ultralight 10D nylon shell with PFC-free durable water repellent (DWR) finish keeps the hood and footbox highly water resistant; 10D nylon breathable liner fabric for minimal weight and bulk - Women's design features shorter length, narrower shoulder, and wider hip to increase thermal efficiency; down chambers are mapped to a woman's physiology to maximize warmth - 30-degree bag features hybrid box baffles in the torso for improved warmth and sewn through construction in leg area for lighter weight; Sea to Summit Guarantee is offered for the lifetime of this product