Big Agnes Copper Spur HV UL3 vs Black Diamond Firstlight 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 Big Agnes Copper Spur HV UL3 (13% less weight). If grams matter to you, that is the one to beat.

Spec	Big Agnes Copper Spur HV UL3	Black Diamond Firstlight 2P
Weight	1,360 g · 1.360 kg · 3.00 lb	1,180 g · 1.180 kg · 2.60 lb
Brand	Big Agnes	Black Diamond
Category	Shelter	Shelter

Big Agnes Copper Spur HV UL3

1,360 g

Ultralight 3-person freestanding tent for groups.

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Black Diamond Firstlight 2P

1,180 g

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

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Big Agnes Copper Spur HV UL3 vs Black Diamond Firstlight 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 Big Agnes Copper Spur HV UL3 (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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