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Alpkit Ultra 1 vs Big Agnes Copper Spur HV UL1

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

Big Agnes Copper Spur HV UL1 is the lighter option — 50 g lighter than the Alpkit Ultra 1 (6% less weight). If grams matter to you, that is the one to beat.
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Spec Alpkit Ultra 1 Big Agnes Copper Spur HV UL1
Weight 900 g · 0.900 kg · 1.98 lb 850 g · 0.850 kg · 1.87 lb
Brand Alpkit Big Agnes
Category Shelter Shelter
Alpkit Ultra 1
900 g

Ultralight freestanding 1-person bikepacking tent with carbon fiber poles, sil/sil ripstop nylon fly, and 60cm porch for gear storage. Sub-1kg weight with 35.5c...

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Big Agnes Copper Spur HV UL1
850 g

Ultralight 1-person freestanding tent with large vestibule.

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Alpkit Ultra 1 vs Big Agnes Copper Spur HV UL1: which should you buy?

If saving weight is your priority, the Big Agnes Copper Spur HV UL1 wins — at 850 g it is 50 g (6%) lighter than the Alpkit Ultra 1 (900 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.

More shelter comparisons