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Big Agnes Copper Spur HV UL1 vs Zpacks Offset Duo
Weight and specs compared for 2026 — and which one to choose.
Zpacks Offset Duo is the lighter option — 300 g lighter than the Big Agnes Copper Spur HV UL1 (35% less weight). If grams matter to you, that is the one to beat.
Big Agnes Copper Spur HV UL1
850 g
Ultralight 1-person freestanding tent with large vestibule.
Full details →Zpacks Offset Duo
550 g
Single-wall Dyneema two-person tent with two doors and vestibules, using an offset ridgeline and a third foot pole for headroom.
Check price Full details →Big Agnes Copper Spur HV UL1 vs Zpacks Offset Duo: which should you buy?
If saving weight is your priority, the Zpacks Offset Duo wins — at 550 g it is 300 g (35%) lighter than the Big Agnes Copper Spur HV UL1 (850 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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