Sonic 0 Down Sleeping Bag LENGTH:Long sporting all the game-changing features

sporting all the game-changing features of the Original Box with double the space

Beyond this exceptional foundation

Material allows air or moisture vapor to pass through

The return of a classic

taking pressure off of your lower back

Sonic 0 Down Sleeping Bag LENGTH:Long sporting all the game-changing featuresSonic 0 Down Sleeping Bag The Backpacker Editors Choice award winning big mountain bag offers exceptional warmth and tuneability with a reduced environmental impact. This bag features our next generation Thermo Gill vents, with a new multistage zipper system that dramatically increases the usable temperature range of the bag and allows fine tuning of comfort from within. Sonics chevron baffle construction better compartmentalizes down, eliminating