The Boost 650 sleeping bag allows you to customize its shape for optimal space and warmth. Its semi-rectangular design offers ample room to move and sleep comfortably in various positions. The WarmZip™ center zipper transforms the bag into a thermally efficient mummy shape, enhancing warmth by pulling the fill closer to your body.
- Shell and liner are made from recycled nylon ripstop, and both treated with a DWR finish to shell moisture
- Horizontal baffles create tunnels of warmth around your body and prevent insulation from shifting and creating cold spots
- 650-fill-power RDS certified hydrophobic down wont wet-out, staying lofty and warm in all conditions
- Puffy draft collar and draft tube along the entry zipper seals in warmth
- WarmZip™ Tech center zipper design zips up to reduce the bag’s internal space to boost warmth
- Multi-use arm holes for a cozy, in camp lounging option
- Includes both a stuff sack and a mesh home storage sack
