← Gear database

Gregory Optic 48 vs Mountain Hardwear Alakazam 45L ALUULA Graflyte

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

Mountain Hardwear Alakazam 45L ALUULA Graflyte is the lighter option — 550 g lighter than the Gregory Optic 48 (40% less weight). If grams matter to you, that is the one to beat.
shopping_cart Check today's price on Amazon
Spec Gregory Optic 48 Mountain Hardwear Alakazam 45L ALUULA Graflyte
Weight 1,370 g · 1.370 kg · 3.02 lb 820 g · 0.820 kg · 1.81 lb
Brand Gregory Mountain Hardwear
Category Backpack Backpack
Gregory Optic 48
1,370 g

Lightweight 48L trail pack with suspended mesh back panel.

Full details →
Mountain Hardwear Alakazam 45L ALUULA Graflyte
820 g

Spring 2026 framed ultralight pack in new ALUULA fabric; one of first mainstream packs with this material

Full details →

HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.

Gregory Optic 48 vs Mountain Hardwear Alakazam 45L ALUULA Graflyte: which should you buy?

If saving weight is your priority, the Mountain Hardwear Alakazam 45L ALUULA Graflyte wins — at 820 g it is 550 g (40%) lighter than the Gregory Optic 48 (1,370 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.

More backpack comparisons

Gregory Optic 48 vs Gossamer Gear Elixir 20 Daypack Gregory Optic 48 vs Gossamer Gear Murmur 36 Hyperlight Backpack Gregory Optic 48 vs Salomon ADV Skin 12 Gregory Optic 48 vs Zpacks Nero Classic Ultra Backpack Gregory Optic 48 vs Zpacks Nero Classic 50L Gregory Optic 48 vs Zpacks Nero Classic Backpack