FJ HydroLite Golf Rain Jackets are constructed from advanced technology-packed materials that deliver 100% waterproof, breathable protection for golfers in cool, windy and rainy conditions. Make Every Day Playable with Tour-Proven FJ Golf Outerwear. This performance fabric offers extreme comfort and allows complete range of motion during the golf swing. The HydroLite™ System is a 100% waterproof shell. Combining lightweight fabrics with a bonded liner makes this DryJoys piece the lightest garment ever produced by FJ. Including a scorecard pocket makes for easy storage and retrieval. The jacket is seam sealed for complete waterproofing. With a waterproof front zipper allows for easy-on and easy-off wear, while protecting you from the elements.