Western Mountaineering Antelope MF

The MicroFiber shell is highly breathable and water-resistant, designed to manage condensation effectively while blocking wind. While it isn't waterproof, it performs exceptionally well in the dry, freezing conditions where this bag is intended to be used.

Western Mountaineering ratings are generally conservative and accurate, but comfort is subjective. If you are a cold sleeper, we recommend pairing this with a high-R-value sleeping pad to prevent heat loss through the ground, which is often the primary cause of feeling cold.

The Antelope MF features a classic mummy cut that is efficient at trapping heat, but it is not overly tight. If you are a side sleeper or someone who shifts frequently, you will find enough room in the shoulders and hips to move without feeling trapped.

This bag is built for thermal efficiency, featuring a draft collar and a full-length draft tube behind the zipper to seal in warmth. These features, combined with the high-loft down, prevent cold spots that are common in less specialized, three-season bags.

Because it uses high-quality down, the bag compresses significantly well for its warmth rating. It packs down to a manageable size for a mountaineering pack, provided you use a quality compression sack to maximize space.