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Alton Goods Ultralight Groundsheet vs Sea to Summit Ultra-Sil Daypack 20L

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

Sea to Summit Ultra-Sil Daypack 20L is the lighter option — 114 g lighter than the Alton Goods Ultralight Groundsheet (63% less weight). If grams matter to you, that is the one to beat.
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Spec Alton Goods Ultralight Groundsheet Sea to Summit Ultra-Sil Daypack 20L
Weight 182 g · 0.182 kg · 0.40 lb 68 g · 0.068 kg · 0.15 lb
Brand Alton Goods Sea to Summit
Category Miscellaneous Miscellaneous
Alton Goods Ultralight Groundsheet
182 g

Minimalist ground protection at 6.4 ounces. All accessories included for easy tent setup.

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Sea to Summit Ultra-Sil Daypack 20L
68 g

Ultralight packable daypack. Stuffs into its own pouch.

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Alton Goods Ultralight Groundsheet vs Sea to Summit Ultra-Sil Daypack 20L: which should you buy?

If saving weight is your priority, the Sea to Summit Ultra-Sil Daypack 20L wins — at 68 g it is 114 g (63%) 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.

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