Sea to Summit Ultra-Sil Dry Bag vs Ursack Major XL
Weight and specs compared for 2026 — and which one to choose.
Industry-leading lightweight dry sack with proven waterproofing and durability.
Full details →Bear-resistant food bag. Approved alternative to bear canister.
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Sea to Summit Ultra-Sil Dry Bag vs Ursack Major XL: which should you buy?
If saving weight is your priority, the Sea to Summit Ultra-Sil Dry Bag wins — at 31 g it is 214 g (87%) lighter than the Ursack Major XL (245 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.