A TOUCH OF WARMTH WITH THE THE NORTH FACE RESPIRATOR MID LAYER JACKET. As the weather turns south this fall layer up in The North Face Respirator Mid Layer Jacket. This durable lightweight mid-layer is designed to add the warmth you need for improved moisture vapor transport. Layer it under your outershell or wear it all on its own this fall for a warm and comfortable look. FEATURESSlim fitStretch, grid-fleece body for improved moisture-vapor transportStretch double weave at hood, arms and seat for improved durability and lighter weightFixed, Lycra-