From the original Mountain Horse. The advanced design of our 3-layer fabric makes this jacket breathable and waterproof offering optimal versatility in all seasons. The light-weight 3-layer fabric eliminates the need for a bulky liner allowing you to move freely with no restrictions. The Prisma Jacket; made just for riders and taken to the EXTREME. Fully adjustable and detachable hood, waterproof underarm zipper ventilation, waterproof two-way zipper, adjustable hem and wrist cuffs, drawstring waist, fleece lined wind flap at chin, feflective detailing for your riding safety, adjustable Velcro microteeth rubber cuffs won't attract dirt and debris. Fabric: 100% nylon.