The D300 jacket is constructed with HydroPore 1.5 3-layer fabric. The jacket is an outstanding all-purpose fishing and general outdoor shell and casual garment. The waterproof fabric is sewn and completely seam sealed. The fabric is breathable which allows for extra comfort. Under arm pit zips enhance air flow and ventilation. The shell is a perfect rainwear item no matter where you are. North, South, East, or West, the D300 is a must have