The Backpacker Editor’s Choice Award Winning Sonic™ has been praised as the only bag you really need from -20ºF to 40ºF.
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 and security from basecamp to summit.
Features: • Contoured hood with drawstring cord for thermal efficiency • 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 • Premium 800 FP down is hydrophobic, PFC-free, and 100% Responsible Down Standard (RDS) Certified for traceability throughout the supply chain
Details: • Temperature: 0F / -18C • Size: Long • Min. Weight: 3 lb , 2 oz / 1.41 kg • Packed Size: 16.0 x 8.5 in dia / 41 x 22 cm dia • Fill: 800 FP Down w/ Nikwax™ • Shell Material: 20D Nylon Ripstop w/ DWR • Lining Material: 30D Nylon Taffeta w/ DWR • Footbox Material: 40D Nylon Ripstop OSMO™ w/ DWR
