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Gossamer Gear Elixir 20 Daypack vs Hyperlite Mountain Gear Southwest 55 Backpack

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

Gossamer Gear Elixir 20 Daypack is the lighter option — 674 g lighter than the Hyperlite Mountain Gear Southwest 55 Backpack (79% less weight). If grams matter to you, that is the one to beat.
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Spec Gossamer Gear Elixir 20 Daypack Hyperlite Mountain Gear Southwest 55 Backpack
Weight 176 g · 0.176 kg · 0.39 lb 850 g · 0.850 kg · 1.87 lb
Brand Gossamer Gear Hyperlite Mountain Gear
Category Backpack Backpack
Gossamer Gear Elixir 20 Daypack
176 g

Roll-top daypack made with waterproof welded ALUULA for reliable wet weather use.

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Hyperlite Mountain Gear Southwest 55 Backpack
850 g

Robust ultralight pack with Dyneema Composite Hybrid fabric and two aluminum stays. Ideal for technical terrain and variable weather conditions.

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Gossamer Gear Elixir 20 Daypack vs Hyperlite Mountain Gear Southwest 55 Backpack: which should you buy?

If saving weight is your priority, the Gossamer Gear Elixir 20 Daypack wins — at 176 g it is 674 g (79%) lighter than the Hyperlite Mountain Gear Southwest 55 Backpack (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 backpack page, or browse the full gear weight database.

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