Sea to Summit Aeros Ultralight Pillow (Regular) vs Therm-a-Rest Vesper 900
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 sleeping bag with 900 fill-power hydrophobic goose down. 360g of down fill. Excellent warmth-to-weight ratio for three-season backpacking trips.
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Sea to Summit Aeros Ultralight Pillow (Regular) vs Therm-a-Rest Vesper 900: which should you buy?
If saving weight is your priority, the Sea to Summit Aeros Ultralight Pillow (Regular) wins — at 60 g it is 490 g (89%) lighter than the Therm-a-Rest Vesper 900 (550 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.