Mountain Hardwear released the new Epic Jacket earlier this year. It's a super lightweight (14oz) waterproof, breathable shell that can be used as a raincoat or windbreaker. The body of the Epic Jacket is made from the rugged Ark 40D Ripstop Nylon. The entire Epic Jacket is coated with Conduit Silk, a nano-level polyurethane coating with silk protein that gives the fabric a smooth, soft and dry feeling next to your skin. The Epic breathes very well under strenuous activities and it has zip vents under the arms for added ventilation. All seams are taped on the inside.