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Sea to Summit Aeros Ultralight Pillow vs Western Mountaineering HighLite Sleeping Bag

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

Sea to Summit Aeros Ultralight Pillow is the lighter option — 401 g lighter than the Western Mountaineering HighLite Sleeping Bag (87% less weight). If grams matter to you, that is the one to beat.
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Spec Sea to Summit Aeros Ultralight Pillow Western Mountaineering HighLite Sleeping Bag
Weight 59 g · 0.059 kg · 0.13 lb 460 g · 0.460 kg · 1.01 lb
Brand Sea to Summit Western Mountaineering
Category Sleep System Sleep System
Sea to Summit Aeros Ultralight Pillow
59 g

Lightest backpacking pillow at 2.1 oz. Compresses down to baseball size for ultralight trips.

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Western Mountaineering HighLite Sleeping Bag
460 g

800-fill goose down sleeping bag rated to 35°F/2°C. Exceptionally light at 460g in 5'6" length, ideal for warm-weather thru-hiking.

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Sea to Summit Aeros Ultralight Pillow vs Western Mountaineering HighLite Sleeping Bag: which should you buy?

If saving weight is your priority, the Sea to Summit Aeros Ultralight Pillow wins — at 59 g it is 401 g (87%) lighter than the Western Mountaineering HighLite Sleeping Bag (460 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.

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