Montbell U.L. Thermawrap Jacket vs Yamatomichi All-weather Alpha Jacket
Weight and specs compared for 2026 — and which one to choose.
Ultralight synthetic Exceloft insulated jacket with 15D Ballistic Airlight nylon shell, highly packable for cool weather.
Full details →Hybrid insulation layer combining Pertex Shield Air shell with Polartec Alpha Direct insulation. Features helmet-compatible hood, pit zips, and water-resistant...
Full details →HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.
Montbell U.L. Thermawrap Jacket vs Yamatomichi All-weather Alpha Jacket: which should you buy?
If saving weight is your priority, the Montbell U.L. Thermawrap Jacket wins — at 227 g it is 278 g (55%) lighter than the Yamatomichi All-weather Alpha Jacket (505 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.