Sonic 0 degree

$599.95 - $649.95
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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.


Capacity 1
Minimum Weight 2 lb , 14 oz / 1.29 kg
Packed Size 15.0 x 8.0 in dia / 38 x 20 cm dia
Temp Rating 0F / -18C
EN Lower Limit -1
Fill Type Down
Fill Weight 1 lb , 9 oz / 700 g
Fits Up To 5'6" / 168 cm
Shoulder Girth 58 in / 147 cm
Hip Girth 56 in / 142 cm
Knee Girth 52 in / 132 cm
Compressed Volume 7.19