Big Agnes Copper Spur HV UL3 vs Zpacks Offset Duo
Weight and specs compared for 2026 — and which one to choose.
Ultralight 3-person freestanding tent for groups.
Full details →Single-wall Dyneema two-person tent with two doors and vestibules, using an offset ridgeline and a third foot pole for headroom.
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Big Agnes Copper Spur HV UL3 vs Zpacks Offset Duo: which should you buy?
If saving weight is your priority, the Zpacks Offset Duo wins — at 550 g it is 810 g (60%) 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.