Black Diamond Firstlight 2P vs Nemo Dagger OSMO 2P

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

Black Diamond Firstlight 2P is the lighter option — 180 g lighter than the Nemo Dagger OSMO 2P (13% less weight). If grams matter to you, that is the one to beat.

Spec	Black Diamond Firstlight 2P	Nemo Dagger OSMO 2P
Weight	1,180 g · 1.180 kg · 2.60 lb	1,360 g · 1.360 kg · 3.00 lb
Brand	Black Diamond	Nemo
Category	Shelter	Shelter

Black Diamond Firstlight 2P

1,180 g

Freestanding 2-person geodesic tent for 3-4 season use.

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Nemo Dagger OSMO 2P

1,360 g

2-person backpacking tent with two doors and large living space.

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Black Diamond Firstlight 2P vs Nemo Dagger OSMO 2P: which should you buy?

If saving weight is your priority, the Black Diamond Firstlight 2P wins — at 1,180 g it is 180 g (13%) lighter than the Nemo Dagger OSMO 2P (1,360 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 shelter page, or browse the full gear weight database.

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