ALPS Mountaineering Zenith Sleeping Bag

The Zenith is rated for 0 degrees Fahrenheit, making it a true winter-ready bag. It is best suited for cold-weather camping where temperatures hover around or drop below freezing.

The 600-fill hydrophobic down is treated to resist moisture, meaning it retains its loft and insulating properties better than untreated down if it gets slightly damp. While it is not waterproof, it is significantly more reliable in humid or condensation-prone environments.

The Regular size fits users up to 6 feet tall with dimensions of 80 inches by 31 inches, while the Long size accommodates users up to 6 feet 6 inches with dimensions of 86 inches by 32 inches. The Long version also includes slightly more fill weight—35 ounces compared to 33 ounces—to maintain the same warmth rating.

Yes, it is designed with several heat-retention features, including a contoured hood, an insulated chest baffle, and a zipper baffle. It also includes a draft collar, which acts as a seal around your shoulders to keep warm air inside the bag.

It comes with a compression stuff sack that helps shrink the bag down to a manageable size for your pack. While it is not an ultralight bag, its weight—between 3 lbs. 3 oz. and 3 lbs. 6 oz.—is reasonable for a 0-degree rated bag.