Big Agnes Fly Creek UL Quilt vs Sea to Summit Ether Light XT

Weight and specs compared for 2026 — and which one to choose.

Big Agnes Fly Creek UL Quilt is the lighter option — 1 g lighter than the Sea to Summit Ether Light XT (0% less weight). If grams matter to you, that is the one to beat.

Spec	Big Agnes Fly Creek UL Quilt	Sea to Summit Ether Light XT
Weight	434 g · 0.434 kg · 0.96 lb	435 g · 0.435 kg · 0.96 lb
Brand	Big Agnes	Sea to Summit
Category	Sleep System	Sleep System

Big Agnes Fly Creek UL Quilt

434 g

Ultralight backpacking quilt with 850-fill DownTek water-repellent down and 227g fill weight. Packable and versatile for three-season use.

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Sea to Summit Ether Light XT

435 g

Ultralight air sleeping pad with 3D construction for comfort.

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Big Agnes Fly Creek UL Quilt vs Sea to Summit Ether Light XT: which should you buy?

If saving weight is your priority, the Big Agnes Fly Creek UL Quilt wins — at 434 g it is 1 g (0%) lighter than the Sea to Summit Ether Light XT (435 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.

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