What Our Gearhead® Experts Are Saying: “This is the shell I grab when the forecast looks questionable. It’s light enough to live in my pack, blocks wind on exposed ridges, and keeps rain out without feeling clammy. I’ve worn it biking and hiking, and it never feels overbuilt or undergunned.” We rely on the Trailworks Jacket when summer weather turns unpredictable. Flylow designed this shell to handle everything from quick-moving mountain bike laps to long, exposed hikes where wind and rain roll in fast. It’s light, packable, and easy to stash when skies are clear—then quick to deploy when clouds build. The 2. 5-layer waterproof breathable construction keeps moisture out while letting heat escape on the move. Recycled nylon fabric adds durability without bulk, and PFAS-free DWR sheds passing showers. Thoughtful details like waterproof zippered pockets, a one-handed adjustable hood, and low-profile cuffs make this a dependable, no-fuss rain layer for everyday adventures.