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Sea to Summit Ultra-Sil Dry Bag vs Zpacks Dry Bag 10L

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

Sea to Summit Ultra-Sil Dry Bag is the lighter option — 11 g lighter than the Zpacks Dry Bag 10L (26% less weight). If grams matter to you, that is the one to beat.
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Spec Sea to Summit Ultra-Sil Dry Bag Zpacks Dry Bag 10L
Weight 31 g · 0.031 kg · 0.07 lb 42 g · 0.042 kg · 0.09 lb
Brand Sea to Summit Zpacks
Category Miscellaneous Miscellaneous
Sea to Summit Ultra-Sil Dry Bag
31 g

Industry-leading lightweight dry sack with proven waterproofing and durability.

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Zpacks Dry Bag 10L
42 g

Dyneema dry bag. Waterproof and ultralight.

Full details →

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Sea to Summit Ultra-Sil Dry Bag vs Zpacks Dry Bag 10L: which should you buy?

If saving weight is your priority, the Sea to Summit Ultra-Sil Dry Bag wins — at 31 g it is 11 g (26%) lighter than the Zpacks Dry Bag 10L (42 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 miscellaneous page, or browse the full gear weight database.

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