Alton Goods Ultralight Groundsheet vs Zpacks Slim Dry Bag
Weight and specs compared for 2026 — and which one to choose.
Minimalist ground protection at 6.4 ounces. All accessories included for easy tent setup.
Full details →Ultra-lightweight dry bag for pack organization. Large size at only 0.4 oz.
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Alton Goods Ultralight Groundsheet vs Zpacks Slim Dry Bag: which should you buy?
If saving weight is your priority, the Zpacks Slim Dry Bag wins — at 11 g it is 171 g (94%) lighter than the Alton Goods Ultralight Groundsheet (182 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.