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Nemo Fillo Elite Wide UL vs Western Mountaineering MegaLite 35°F

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

Nemo Fillo Elite Wide UL is the lighter option — 391 g lighter than the Western Mountaineering MegaLite 35°F (77% less weight). If grams matter to you, that is the one to beat.
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Spec Nemo Fillo Elite Wide UL Western Mountaineering MegaLite 35°F
Weight 119 g · 0.119 kg · 0.26 lb 510 g · 0.510 kg · 1.12 lb
Brand Nemo Western Mountaineering
Category Sleep System Sleep System
Nemo Fillo Elite Wide UL
119 g

Hybrid inflatable pillow with foam padding. Lightweight comfort at 4.2 oz for multi-day hikes.

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Western Mountaineering MegaLite 35°F
510 g

Ultralight 850-fill down bag for warm summer conditions.

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Nemo Fillo Elite Wide UL vs Western Mountaineering MegaLite 35°F: which should you buy?

If saving weight is your priority, the Nemo Fillo Elite Wide UL wins — at 119 g it is 391 g (77%) lighter than the Western Mountaineering MegaLite 35°F (510 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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