The Mountain Hardwear Stimulus Jacket is one of the lightest waterproof/breathable jackets on the market. Constructed of superlight Incite Nylon fabric, a Conduit laminate and zWeld construction this jacket will truly keep you dry and protected from the wind while never weighing you down. There is reflectivity points on the coat for when your running on the road and a secure chest pocket and hand pockets with earpiece cord exits. The jacket also stows in a pocket.