The Mountain Hardwear Phantom WINDSTOPPER -40°F sleeping bag is engineered for alpine traverses and extreme conditions. With its exceptional 800-fill-power down insulation, this cold weather sleeping bag ensures optimal warmth without the bulk.
- Constructed with RDS®-certified down for sustainable warmth.
- Features GORE WINDSTOPPER® fabric that is breathable, highly water-resistant, and windproof.
- The mummy cut adds space at your feet for gear storage during freezing temps.
Equipped with a durable #5 zipper that resists snagging, it’s easy to get in and out. Oversize dual zipper draft tubes and a shaped draft collar work together to prevent cold spots and retain warmth. The oversized down-filled face gasket and hood cinch tightly to block drafts, ensuring comfort in the harshest conditions.
Lindsey Taylor (verified owner) –
The Phantom WINDSTOPPER is a game changer! I stayed warm during my alpine expedition in temperatures below zero. Highly recommend for anyone serious about mountaineering.
David Clements (verified owner) –
This sleeping bag is incredibly lightweight yet surprisingly warm. I was skeptical, but it performed brilliantly in harsh conditions. Best choice for extreme cold.
Denise Shelton (verified owner) –
I bought this down insulation bag for winter camping, and it exceeded my expectations. The draft collar really works, keeping the warmth in and the cold out.