Berghaus Rain Motion Jacket Review - Ultralight Rain Shell with Pockets! The Berghaus Rain-Motion is a 9.4oz 3L Pertex Shield shell with one of the best hoods in the game — built to move fast in foul weather. Full review. In this review we break down the Berghaus Rain-Motion Jacket — a lightweight waterproof shell built specifically for high-output days when you need protection that doesn't slow you down. At just 9.4 oz in a men's large, it uses 3-layer Pertex® Shield rated at 20,000mm hydrostatic head and 20,000 g/m²/24hr breathability, with fully taped seams and a PFC-free DWR finish. The fit is slim and articulated to eliminate fabric flap and restriction while you're moving. But the real standout is the hood — Berghaus reportedly iterated on it repeatedly based on tester feedback until it tracked with head movement, preserved peripheral vision, and stayed put in wind. Add hipbelt-compatible pockets and an internal zip pocket that doubles as its own stuff sack with a carry loop,...