Big Agnes Copper Spur HV UL3 vs Zpacks 7x9 Flat Tarp

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

Zpacks 7x9 Flat Tarp is the lighter option — 1,221 g lighter than the Big Agnes Copper Spur HV UL3 (90% less weight). If grams matter to you, that is the one to beat.

Spec	Big Agnes Copper Spur HV UL3	Zpacks 7x9 Flat Tarp
Weight	1,360 g · 1.360 kg · 3.00 lb	139 g · 0.139 kg · 0.31 lb
Brand	Big Agnes	Zpacks
Category	Shelter	Shelter

Big Agnes Copper Spur HV UL3

1,360 g

Ultralight 3-person freestanding tent for groups.

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Zpacks 7x9 Flat Tarp

139 g

Minimalist DCF tarp shelter at 139g. Provides 7x9 ft coverage with 8 tie-out loops. Best for experienced tarpers in fair weather.

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Big Agnes Copper Spur HV UL3 vs Zpacks 7x9 Flat Tarp: which should you buy?

If saving weight is your priority, the Zpacks 7x9 Flat Tarp wins — at 139 g it is 1,221 g (90%) 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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