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Sea to Summit Ember Sleeping Bag vs Therm-a-Rest NeoLoft

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

Sea to Summit Ember Sleeping Bag is the lighter option — 108 g lighter than the Therm-a-Rest NeoLoft (15% less weight). If grams matter to you, that is the one to beat.
Spec Sea to Summit Ember Sleeping Bag Therm-a-Rest NeoLoft
Weight 609 g · 0.609 kg · 1.34 lb 717 g · 0.717 kg · 1.58 lb
Brand Sea to Summit Therm-a-Rest
Category Sleep System Sleep System
Sea to Summit Ember Sleeping Bag
609 g

Three-season sleeping bag with 850+ UltraDry hydrophobic down, 5.1L pack size, and a rectangular zipper profile for comfort. Men's regular size.

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Therm-a-Rest NeoLoft
717 g

Plush 10cm-thick insulated air pad with R-value 4.7, designed for car-camping-level comfort at a backpackable weight.

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Sea to Summit Ember Sleeping Bag vs Therm-a-Rest NeoLoft: which should you buy?

If saving weight is your priority, the Sea to Summit Ember Sleeping Bag wins — at 609 g it is 108 g (15%) lighter than the Therm-a-Rest NeoLoft (717 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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