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      The Backpacker Editor’s Choice Award Winning Sonic™ has been praised as the only bag you really need from -18 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.

      Switchback Insulated, Regular
      Phantom, Reg, -18C / 0F
      Rave 15, Reg, -9C / 15F - Thermo Gill - Womens
      Andes 800, -22C / -8F - Womens

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