The Backpacker Editor’s Choice Award Winning Sonic has been praised as the only bag you really need from -20 to 40 degrees. Now updated for 2019 with a redesigned draft collar and draft tubes to create a secure seal against cold air; overstuffed 800FP hydrophobic, RDS certified down; and an updated profile and shaped footbox, the Sonic continues to rock out as the King of Comfort from basecamp to summit. The contoured hood with drawstring cord creates maxiumum thermal efficiency, and stretch construction at the knees allows side sleeping. Toester footbox is tailored for foot comfort, waterproof/breathable, and includes a layer of synthetic insulation to reduce cold spots.
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Award-winning design allows for temperature regulation in variable mountain climates
Adjustable Thermo Gills vent body heat at your core without letting cold air rush in
Stretch construction at the knees allows side sleeping
Overstuffed with 800 FP hydrophobic down that is 100% Responsible Down Standard (RDS) Certified ensuring humane treatment and traceability throughout the supply chain
Minimum Weight: 3lb 8oz; Temp Rating: -20F
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