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Black Diamond Speed 40 vs LiteAF ECOPAK 30L Curve Frameless

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

LiteAF ECOPAK 30L Curve Frameless is the lighter option — 812 g lighter than the Black Diamond Speed 40 (69% less weight). If grams matter to you, that is the one to beat.
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Spec Black Diamond Speed 40 LiteAF ECOPAK 30L Curve Frameless
Weight 1,180 g · 1.180 kg · 2.60 lb 368 g · 0.368 kg · 0.81 lb
Brand Black Diamond LiteAF
Category Backpack Backpack
Black Diamond Speed 40
1,180 g

Lightweight 40L alpine pack with removable framesheet.

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LiteAF ECOPAK 30L Curve Frameless
368 g

Ultralight frameless backpack made from 100% recycled polyester fabric; fully waterproof and durable

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Black Diamond Speed 40 vs LiteAF ECOPAK 30L Curve Frameless: which should you buy?

If saving weight is your priority, the LiteAF ECOPAK 30L Curve Frameless wins — at 368 g it is 812 g (69%) lighter than the Black Diamond Speed 40 (1,180 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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