What Our Gearhead(R) Experts Are Saying:"This is my go-to shell for trail running in unpredictable weather. It's impressively breathable, keeping me dry inside and out, even when I'm pushing the pace. The packable design is a game-changer-I can stash it in its own pocket and wear it around my waist when the rain lets up. The watch window is a great touch, and the back vents help regulate heat when I'm working hard. Whether I'm running in the mountains or training in misty conditions, this jacket keeps me moving comfortably."When we're moving fast through the mountains, we need a waterproof shell that won't slow us down. The Norrona Senja Gore-Tex Jacket is built for high-output activities like trail running, offering the perfect balance of lightweight protection and breathability. The 3-layer GORE-TEX fabric keeps us dry with a 28,000mm waterproof rating while maintaining exceptional airflow, so we stay comfortable even when pushing our limits. Designed with runners in mind, this jacket features a packable hood, an easy-access zippered watch window, and back vents for added airflow. When the rain stops, the entire jacket stows into its own back pocket and straps around the waist for hands-free carrying. Elastic cuffs and a one-hand adjustable hem provide a secure fit, making this shell a reliable companion for long-distance runs and mountain adventures.