NEMO Tensor Elite Ultralight Insulated vs Sea to Summit Spark SP III

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

NEMO Tensor Elite Ultralight Insulated is the lighter option — 411 g lighter than the Sea to Summit Spark SP III (58% less weight). If grams matter to you, that is the one to beat.

Spec	NEMO Tensor Elite Ultralight Insulated	Sea to Summit Spark SP III
Weight	298 g · 0.298 kg · 0.66 lb	709 g · 0.709 kg · 1.56 lb
Brand	NEMO	Sea to Summit
Category	Sleep System	Sleep System

NEMO Tensor Elite Ultralight Insulated

298 g

Lightest insulated inflatable sleeping pad on the market. Trapezoidal baffles eliminate cold spots; inflates in under 60 seconds with pump sack.

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Sea to Summit Spark SP III

709 g

850-fill down sleeping bag rated to 0°C / 32°F.

Full details →

NEMO Tensor Elite Ultralight Insulated vs Sea to Summit Spark SP III: which should you buy?

If saving weight is your priority, the NEMO Tensor Elite Ultralight Insulated wins — at 298 g it is 411 g (58%) lighter than the Sea to Summit Spark SP III (709 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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