Sonic™ Down Mummy Sleeping Bag W2

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Sonic’s chevron baffle construction better compartmentalizes down, eliminating migration and keeping the down evenly lofted. (Not to mention, it looks awesome.) 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 incorporates our next-generation Thermo Gill™ vents, with a new multistage zipper system that dramatically increases the usable temperature range of the bag and supports fine-tuning of comfort from within.

Adaptable to whatever the mountain throws at it, Sonic continues to reverberate as the ultimate extreme weather companion. The shell along with liner fabrics are 100% recycled fabrics along with bluesign® approved, along with the premium 800 FP hydrophobic down is 100% Responsible Down Standard (RDS) certified. Years of history in the field yielded detailed upgrades on this bag, including a perfected profile, redesigned draft collar, along with bolstered draft tubes. Our proven Toester™ footbox keeps feet warmer, gives a waterproof barrier against tent wall condensation, along with protects down from moisture while drying damp clothes inside the footbox.