Sea to Summit Ultra-Sil Dry Bag vs Zpacks Sit Pad
Weight and specs compared for 2026 — and which one to choose.
Industry-leading lightweight dry sack with proven waterproofing and durability.
Full details →Ultralight foam sit pad. Doubles as back panel for frameless packs.
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Sea to Summit Ultra-Sil Dry Bag vs Zpacks Sit Pad: which should you buy?
If saving weight is your priority, the Zpacks Sit Pad wins — at 28 g it is 3 g (10%) lighter than the Sea to Summit Ultra-Sil Dry Bag (31 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.