Patagonia Nano-Air Ultralight Hoody (Men's M) vs Rab Alpha Flash Lightweight Fleece
Weight and specs compared for 2026 — and which one to choose.
Active insulation hoody with 20g FullRange synthetic fill throughout. Highly breathable uninsulated side panels. 8.8 oz. Ideal as a mid-layer for active pursuit...
Full details →Ultralight fleece with Polartec Alpha Direct 120 insulation. Men's Large: 272g. Slim fit, brushed back, flatlock seams, YKK zips.
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Patagonia Nano-Air Ultralight Hoody (Men's M) vs Rab Alpha Flash Lightweight Fleece: which should you buy?
If saving weight is your priority, the Patagonia Nano-Air Ultralight Hoody (Men's M) wins — at 249 g it is 6 g (2%) lighter than the Rab Alpha Flash Lightweight Fleece (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.