The North Face Men's Jammu Jacket is constructed with the first truly breathable, fully waterproof, temperature regulating fabric, Polartec® NeoShell. This unbelievable new fabric makes this new technical jacket the pinnacle of personal climate control. Unlike most waterproof fabrics available, this new material permits air permeability that helps accelerate moisture vapor and transport. With the perfect technical fit, the Jammu Jacket is fast becoming the go to jacket for our serious adventurers.