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Big Agnes Copper Spur HV UL2 vs Zpacks Duplex

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

Zpacks Duplex is the lighter option — 550 g lighter than the Big Agnes Copper Spur HV UL2 (52% less weight). If grams matter to you, that is the one to beat.
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Spec Big Agnes Copper Spur HV UL2 Zpacks Duplex
Weight 1,060 g · 1.060 kg · 2.34 lb 510 g · 0.510 kg · 1.12 lb
Brand Big Agnes Zpacks
Category Shelter Shelter
Big Agnes Copper Spur HV UL2
1,060 g

Ultralight 2-person freestanding tent. Best-in-class weight.

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Zpacks Duplex
510 g

Dyneema 2-person trekking pole shelter. Legendary ultralight option.

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Big Agnes Copper Spur HV UL2 vs Zpacks Duplex: which should you buy?

If saving weight is your priority, the Zpacks Duplex wins — at 510 g it is 550 g (52%) lighter than the Big Agnes Copper Spur HV UL2 (1,060 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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