Sea to Summit Aeros Ultralight Pillow (Regular) vs Zpacks Classic 20°F Sleeping Bag
Weight and specs compared for 2026 — and which one to choose.
Inflatable ultralight camp pillow with a curved synthetic-fill surface and multi-function valve for comfort.
Full details →Ultralight mummy sleeping bag with 900-fill power goose down rated to 20°F. Water-resistant down and Dyneema shell. Weighs 20.3 oz in regular size.
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Sea to Summit Aeros Ultralight Pillow (Regular) vs Zpacks Classic 20°F Sleeping Bag: which should you buy?
If saving weight is your priority, the Sea to Summit Aeros Ultralight Pillow (Regular) wins — at 60 g it is 516 g (90%) lighter than the Zpacks Classic 20°F Sleeping Bag (576 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 sleep system page, or browse the full gear weight database.