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Hyperlite Mountain Gear Unbound 55 vs ULA Equipment Ultra Circuit

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

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

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Spec Hyperlite Mountain Gear Unbound 55 ULA Equipment Ultra Circuit
Weight 853 g · 0.853 kg · 1.88 lb 1,043 g · 1.043 kg · 2.30 lb
as listed (size not stated)
Brand Hyperlite Mountain Gear ULA Equipment
Category Backpack Backpack
Hyperlite Mountain Gear Unbound 55
853 g

Internal frame pack made from Dyneema Composite Hybrid fabric with 55L capacity. Designed for thru-hiking with weather-resistant roll-top lid and comfortable su...

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ULA Equipment Ultra Circuit
1,043 g

Popular 68L ultralight backpack with Ultra fabric. Lightweight option for long-distance trails.

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Hyperlite Mountain Gear Unbound 55 vs ULA Equipment Ultra Circuit: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

See where both rank against everything else in this category on the lightest backpack page, or browse the full gear weight database.

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