The versatile Fundango Piorini Waterproof Jacket men's hiking jacket is great for any outdoor adventure! The development of the high quality Dripex membrane used in this jacket was inspired and aided by athletes training in extreme weather conditions. To meet their demands, the Dripex lubrication and lamination, which protects and reinforces the fabric from the inside out over its entire width, does not let in cold wind or unwanted moisture under any conditions, while allowing sweat to escape freely during active movement. The 5,000 mm figure means that every square centimeter of the jacket must be able to withstand the pressure of a column of water at least 5,000 mm high without letting moisture through. The jacket is made with a 2.5 layer fabric construction: the first layer is a lightweight outer surface, followed by a polyurethane-based waterproof-breathable layer and a very thin, smooth-feeling, abrasion-resistant inner protective layer. The ventilation openings in the underarm area allow you to easily regulate heat dissipation. Welded stitches and waterproof zippers keep out sudden precipitation. The jacket's ergonomic cut ensures complete freedom of movement and allows layering for technical dressing. Elasticated trims and a fixed drawstring adjustable hood protect you from cold winds. Zippered exterior pockets comfortably hold your valuables, while elastic wrist bands fit precisely around your wrists, keeping your arms warm without restricting free movement and preventing sleeves from tangling. A water-repellent treatment prevents water droplets from sitting on the fabric, allowing water to collect as tiny beads and roll off the jacket, so you can wear it in wet weather conditions.