Mammut Protect Fiber Bag

Yes, it is rated for temperatures down to -40°F. It is specifically engineered as a winter bag, utilizing synthetic insulation and a draft collar with a magnetic closure to effectively trap heat in extreme conditions.

Not at all. The central two-way zipper is designed for intuitive access and allows you to easily regulate your temperature without fully unzipping the bag. It also features an improved design to prevent the material from snagging or jamming.

This is a heavy-duty winter bag, so it is substantial. It has a compressed volume of 27.3 liters and weighs 5.4 lbs, so you should plan for it to occupy a significant portion of your pack's main compartment.

The hood is constructed with specialized materials designed to minimize crinkling and noise when you move your head. This helps reduce distractions so you can get a more restful sleep, especially if you are a light sleeper.

Yes, the exterior shell is water-resistant, which provides essential protection against moisture and condensation in harsh winter environments. However, it is not fully waterproof, so avoid direct exposure to heavy rain or standing water.

The foot box is shaped to allow your feet to rest in a natural position without compressing the insulation. This design provides extra room for comfort while maintaining thermal efficiency, ensuring your feet stay warm without the added weight of a larger bag.