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Patagonia R1 Fleece Jacket vs Rab Mythic Ultra Jacket

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

Patagonia R1 Fleece Jacket is the lighter option — 231 g lighter than the Rab Mythic Ultra Jacket (43% less weight). If grams matter to you, that is the one to beat.
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Spec Patagonia R1 Fleece Jacket Rab Mythic Ultra Jacket
Weight 306 g · 0.306 kg · 0.67 lb 537 g · 0.537 kg · 1.18 lb
Brand Patagonia Rab
Category Clothing - Mid Layer Clothing - Mid Layer
Patagonia R1 Fleece Jacket
306 g

Midweight fleece jacket made from Polartec Powergrid (93% recycled polyester, 7% spandex). Excellent breathability and moisture management for aerobic hiking. M...

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Rab Mythic Ultra Jacket
537 g

Premium ultralight down jacket with 900FP hydrophobic down and TILT zoned insulation in a lightweight Atmos shell, built for cold alpine conditions.

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Patagonia R1 Fleece Jacket vs Rab Mythic Ultra Jacket: which should you buy?

If saving weight is your priority, the Patagonia R1 Fleece Jacket wins — at 306 g it is 231 g (43%) lighter than the Rab Mythic Ultra Jacket (537 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.

More clothing - mid layer comparisons