Arc'teryx Proton LT Hoody vs Montane Protium Lite Hooded Fleece
Weight and specs compared for 2026 — and which one to choose.
Synthetic insulated hoody with excellent moisture management.
Full details →Lightweight fleece at 261g. 35% lighter fabric than standard Protium with Thermo Grid Lite.
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Arc'teryx Proton LT Hoody vs Montane Protium Lite Hooded Fleece: which should you buy?
If saving weight is your priority, the Montane Protium Lite Hooded Fleece wins — at 261 g it is 24 g (8%) lighter than the Arc'teryx Proton LT Hoody (285 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.