Sonic™ Down Mummy Sleeping Bag (0F / -18C) Sizes:REG Highly versatile means the gravity

Highly versatile means the gravity system is designed with every occasion in mind

Hikes of Newfoundland is a must-have guide to the must-do walks and hikes for those who wish to explore this unique

while the insulation provides optimal thermal regulation

to the 24/7 Search & Rescue services

Sonic™ Down Mummy Sleeping Bag (0F / -18C) Sizes:REG Highly versatile means the gravitySonic is built to be the only bag you need from 20F to 40F. 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