Sea to Summit Spark Pro 1C/30F Sleeping bag

Professional grade 30-degree Fahrenheit (-1-degree Celsius) ultralight down sleeping bag for for 2-season backpacking, bike packing, and touring; contoured mummy shape features hood and zipper draft tubes 950+ fill power down insulation (Responsible Down Standard certified) treated with Ultra-Dry Down to improve reaction to moisture, retaining loft and performance Featherweight 10D nylon shell with PFC-free durable water repellent (DWR) finish keeps the hood and footbox highly water resistant; highly breathable 10D nylon liner for enhanced comfort Free Flow Zip System features a YKK #5 side zipper with zipper plow for reliable, snag-free operation and a YKK #3 footbox and shoulder zipper for minimal additional weight 30-degree bag features hybrid box baffles in torso for warmth and sewn through baffles in the leg area to reduce weight; Sea to Summit Guarantee is offered for the lifetime of this product