AntiGravityGear Ultralight Dry Sack 12L vs Montbell Thunder Pass Hat
Weight and specs compared for 2026 — and which one to choose.
12L capacity ultralight dry sack at 0.9 oz (26g) made from 20D nylon with polyurethane coating and TPU bottom.
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AntiGravityGear Ultralight Dry Sack 12L vs Montbell Thunder Pass Hat: which should you buy?
If saving weight is your priority, the AntiGravityGear Ultralight Dry Sack 12L wins — at 26 g it is 29 g (53%) lighter than the Montbell Thunder Pass Hat (55 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.