Nemo Sonic 20 Regular Sleeping Bag, Men's, Goodnight Gray/Torch 24VYOUSNC2

Sonic is built to be the only bag you need from -20°F to 40°F. The Backpacker Editors’ Choice award-winning big-mountain bag offers exceptional warmth and tuneability with a reduced environmental impact. This bag features our next-generation Thermo Gill™ vents, with a new multistage zipper system that dramatically increases the usable temperature range of the bag and allows fine-tuning of comfort from within. Sonic’s chevron baffle construction better compartmentalizes down, eliminating migration and keeping the down evenly lofted. (Not to mention, it looks awesome.) Sustainability: Constructed with 100% recycled, bluesign® approved shell and liner fabrics Design & Details: Award-winning design updated for even greater warmth retention and adjustability across temperatures Overstuffed with premium 800 FP hydrophobic down that is PFC-Free and 100% Responsible Down Standard (RDS) certified, ensuring humane treatment and traceability throughout the supply chain Toester™ waterproof/breathable footbox utilizes a layer of synthetic insulation to protect the down and deliver maximum toastiness for toes Second-generation Thermo Gill™ vents extend the comfort range with a new multistage zipper system Offset zipper creates a thermally efficient seal while an updated profile secures warmth closer to the body Chevron baffle construction better compartmentalizes down for more uniform loft and down migration prevention Stretch construction at the knees for comfortable side sleeping