Created as a lightweight, versatile fleece that works well across the board, Yamatomichi’s Active Pullover is everything you need in a pullover fleece, and nothing you don’t. The not-so-secret sauce is that Primaloft Active Evolve fabric—a super-lightweight brushed fleece that ticks the boxes for breathability and warmth, keeping you comfortable without overheating. 
Barely tipping the scales at just 148g (for medium), it works just as well as a base-layer as it does over a t-shirt when a bit of extra insulation is called for.