The Rail Spec Unlined Bomber from PULSAR is perfect for warmer weather or layered over a fleece. Made from a class 3 waterproof and breathable 300 denier PU polyester outer fabric it is waterproof even in the worst conditions. This bomber comes with an abundance of features including a sports style waterproof zip pocket, zip away and detachable lined arctic style hood and a unique flip-out ID window. No wonder this is one of the best selling on the market.