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Bear Grylls Emergency Bivy vs Unknown Phantom Carabiner

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

Unknown Phantom Carabiner is the lighter option — 85 g lighter than the Bear Grylls Emergency Bivy (75% less weight). If grams matter to you, that is the one to beat.
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Spec Bear Grylls Emergency Bivy Unknown Phantom Carabiner
Weight 113 g · 0.113 kg · 0.25 lb 28 g · 0.028 kg · 0.06 lb
Brand Bear Grylls Unknown
Category Safety Safety
Bear Grylls Emergency Bivy
113 g

Tear and puncture-resistant mylar bivy. Only 4 oz for emergency backup shelter.

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Unknown Phantom Carabiner
28 g

Lightweight climbing carabiner at 1oz. Full UIAA certified.

Full details →

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Bear Grylls Emergency Bivy vs Unknown Phantom Carabiner: which should you buy?

If saving weight is your priority, the Unknown Phantom Carabiner wins — at 28 g it is 85 g (75%) lighter than the Bear Grylls Emergency Bivy (113 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 safety page, or browse the full gear weight database.

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