Janji Auras Ultrafleece Hoodie vs Rab Alpha Flash
Weight and specs compared for 2026 — and which one to choose.
Mesh outer with brushed inner using proprietary Astra fleece fabric.
Full details →Lightweight fleece jacket using Polartec Alpha Direct fabric. Breathable and packable mid-layer for expeditions with minimalist weight philosophy.
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Janji Auras Ultrafleece Hoodie vs Rab Alpha Flash: which should you buy?
If saving weight is your priority, the Janji Auras Ultrafleece Hoodie wins — at 133 g it is 122 g (48%) lighter than the Rab Alpha Flash (255 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 clothing - mid layer page, or browse the full gear weight database.