We designed our Men's Koster 2.5-Layer Rain Jacket so you can stay dry and comfortable on your everyday adventures in the rain. This durable rain jacket features a sailing-inspired design, and our Helly Tech® Performance technology delivers waterproof, breathable, and windproof protection. It packs down into the pocket for easy storage while traveling. Plus, a repairable zipper means you can rely on the jacket season after season.