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Sea to Summit Ultralight Insulated vs Zpacks Zip Around Quilt 900

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

Sea to Summit Ultralight Insulated is the lighter option — 17 g lighter than the Zpacks Zip Around Quilt 900 (3% less weight). If grams matter to you, that is the one to beat.
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Spec Sea to Summit Ultralight Insulated Zpacks Zip Around Quilt 900
Weight 595 g · 0.595 kg · 1.31 lb 612 g · 0.612 kg · 1.35 lb
Brand Sea to Summit Zpacks
Category Sleep System Sleep System
Sea to Summit Ultralight Insulated
595 g

Insulated inflatable pad with R-value 3.7.

Full details →
Zpacks Zip Around Quilt 900
612 g

Premium 900-fill down quilt with full zip for sleeping bag versatility. Draft collar and pad attachment straps for secure, warm nights below freezing.

Full details →

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Sea to Summit Ultralight Insulated vs Zpacks Zip Around Quilt 900: which should you buy?

If saving weight is your priority, the Sea to Summit Ultralight Insulated wins — at 595 g it is 17 g (3%) lighter than the Zpacks Zip Around Quilt 900 (612 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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