Marmot Hydrogen 30°F vs Therm-a-Rest Vesper 32F Down Quilt
Weight and specs compared for 2026 — and which one to choose.
Premium ultralight quilt with 900-fill hydrophobic down. Rated 32F/0C. At 550g it is the lightest mainstream quilt in its temperature class.
Full details →HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.
Marmot Hydrogen 30°F vs Therm-a-Rest Vesper 32F Down Quilt: which should you buy?
If saving weight is your priority, the Therm-a-Rest Vesper 32F Down Quilt wins — at 550 g it is 159 g (22%) lighter than the Marmot Hydrogen 30°F (709 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.