Hyperlite Mountain Gear 20-Degree Quilt (Regular) vs Sea to Summit Spark SP III

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

Hyperlite Mountain Gear 20-Degree Quilt (Regular) is the lighter option — 139 g lighter than the Sea to Summit Spark SP III (20% less weight). If grams matter to you, that is the one to beat.

Spec	Hyperlite Mountain Gear 20-Degree Quilt (Regular)	Sea to Summit Spark SP III
Weight	570 g · 0.570 kg · 1.26 lb	709 g · 0.709 kg · 1.56 lb
Brand	Hyperlite Mountain Gear	Sea to Summit
Category	Sleep System	Sleep System

Hyperlite Mountain Gear 20-Degree Quilt (Regular)

570 g

Ultralight 20F down quilt with 1000FP DWR-treated down, 7D ripstop shell, 3D baffles and pad attachment straps.

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Sea to Summit Spark SP III

709 g

850-fill down sleeping bag rated to 0°C / 32°F.

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Hyperlite Mountain Gear 20-Degree Quilt (Regular) vs Sea to Summit Spark SP III: which should you buy?

If saving weight is your priority, the Hyperlite Mountain Gear 20-Degree Quilt (Regular) wins — at 570 g it is 139 g (20%) lighter than the Sea to Summit Spark SP III (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.

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