Thermodown 30 Down Quilt vs Katabatic Gear Alsek Quilt

The Katabatic Alsek is the warmer and more refined quilt: 850 fill-power down, a 22°F rating, continuous baffles and a patented pad attachment that owners say keeps drafts out. The Thermodown 30 is the more versatile, budget-minded pick: 800 fill-power RDS duck down, top and bottom draft collars, and a quilt that closes into a mummy bag for colder nights. Cold sleepers and shoulder-season hikers should take the Alsek. Warm-weather backpackers who want one quilt that adapts from blanket to bag should take the Thermodown 30.

• Choose the Thermodown 30 if you backpack mostly in warm weather, want a quilt that cinches closed into a mummy bag, and value a lifetime warranty.
• Choose the Katabatic Alsek if you sleep cold, hike in shoulder seasons, and want the warmer, higher-fill quilt with the better pad attachment.