Montane Protium Hooded Fleece vs Yamatomichi All-weather Alpha Jacket
Weight and specs compared for 2026 — and which one to choose.
Midweight fleece at 13.7oz. Warm and weather-resistant with hood.
Hybrid insulation layer combining Pertex Shield Air shell with Polartec Alpha Direct insulation. Features helmet-compatible hood, pit zips, and water-resistant...
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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Montane Protium Hooded Fleece vs Yamatomichi All-weather Alpha Jacket: which should you buy?
If saving weight is your priority, the Montane Protium Hooded Fleece wins — at 390 g it is 133 g (25%) lighter than the Yamatomichi All-weather Alpha Jacket (523 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.