Big Agnes Copper Spur HV UL3 vs Nemo Kunai 2P

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

Big Agnes Copper Spur HV UL3 is the lighter option — 400 g lighter than the Nemo Kunai 2P (23% less weight). If grams matter to you, that is the one to beat.

Spec	Big Agnes Copper Spur HV UL3	Nemo Kunai 2P
Weight	1,360 g · 1.360 kg · 3.00 lb	1,760 g · 1.760 kg · 3.88 lb
Brand	Big Agnes	Nemo
Category	Shelter	Shelter

Big Agnes Copper Spur HV UL3

1,360 g

Ultralight 3-person freestanding tent for groups.

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Nemo Kunai 2P

1,760 g

Freestanding 3-4 season two-person tent with convertible vents and twin vestibules, built for alpine and winter use.

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Big Agnes Copper Spur HV UL3 vs Nemo Kunai 2P: which should you buy?

If saving weight is your priority, the Big Agnes Copper Spur HV UL3 wins — at 1,360 g it is 400 g (23%) lighter than the Nemo Kunai 2P (1,760 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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