ALPS Mountaineering Zenith Sleeping Bag

The Zenith is a 3-season bag with a 30°F temperature rating, making it ideal for spring, summer, and fall backpacking trips. It is designed to handle cool nights, but you will want a warmer bag if you are camping in true winter conditions.

Hydrophobic down is treated to resist moisture, meaning it retains its loft and insulating properties much better than untreated down if it gets damp. While it is not waterproof, it provides a crucial safety net against condensation or unexpected humidity inside your tent.

Yes, this bag is quite generous in length. It accommodates users up to 6' 8" tall, which is significantly longer than many standard mummy bags on the market.

The mummy shape is designed to maximize thermal efficiency by keeping the insulation close to your body, which can feel snug compared to a rectangular bag. However, the contoured design is standard for high-performance backpacking and is necessary to keep the weight down to just over two pounds.

It packs down to 13" x 7.5", which is a manageable size for most backpacking packs. Because it uses 650-fill down, it compresses well, though you can further reduce the volume by using an aftermarket compression sack if you need extra space.

These features are essential for heat retention. The chest insulation keeps your core warm, while the zipper baffle acts as a gasket to prevent cold air from leaking through the zipper teeth, ensuring you stay warm throughout the night.