1.877.883.6276. Nemo Sonic 0 Sleeping Bag (850 Down)-Long. Thermo Gills allow you to regulate the warmth of the bag on milder nights by as much as 20F/11C without letting cold drafts inside. The Sonic series of sleeping bags are built to put a smile on your face when the cold weather is keeping most people out of the mountains. We’ve used all the best ingredients of high-end fabrics and 850 fill power goose down insulation paired with stretch construction at the knees for side sleeping. Thermo Gills regulate the internal temperature of the bag by as much as 20 F without letting drafts in. Product Weight: 3.00 UPC: 814041014557. The item “Nemo Sonic 0 Sleeping Bag (850 Down)-Long” is in sale since Monday, January 18, 2016. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “thecampsaver” and is located in Logan, Utah. This item can be shipped to United States.