Katabatic Gear Alsek 22°F vs Therm-a-Rest Vesper 32 Quilt
Weight and specs compared for 2026 — and which one to choose.
900-fill hydrophobic down quilt with cinchable footbox. Top-rated ultralight quilt for 3-season backpacking with excellent warmth-to-weight ratio.
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Katabatic Gear Alsek 22°F vs Therm-a-Rest Vesper 32 Quilt: which should you buy?
If saving weight is your priority, the Katabatic Gear Alsek 22°F wins — at 454 g it is 96 g (17%) lighter than the Therm-a-Rest Vesper 32 Quilt (550 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest sleep system page, or browse the full gear weight database.