Enlightened Equipment Enigma 20°F vs Sea to Summit Spark 30 Sleeping Bag
Weight and specs compared for 2026 — and which one to choose.
Ultralight synthetic quilt for budget-conscious backpackers.
Full details →Ultralight 30°F mummy bag filled with 850+ loft down. Differential cut and ripstop shell deliver excellent warmth-to-weight ratio.
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Enlightened Equipment Enigma 20°F vs Sea to Summit Spark 30 Sleeping Bag: which should you buy?
If saving weight is your priority, the Enlightened Equipment Enigma 20°F wins — at 369 g it is 113 g (23%) lighter than the Sea to Summit Spark 30 Sleeping Bag (482 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.