The WindBlock 1.0 Jacket is the essential piece for unpredictable weather. This ultralight, slim-fit shell packs into its own chest pocket with a bike-storage strap for easy stowing mid-ride, so you can pack it and forget it until you need it. The 4-way stretch windproof fabric is treated with a PFAS-free dirt- and water-resistant finish to help shed light rain and trail spray, and is made with bluesign® approved materials for more responsible performance. The helmet-compatible hidden hood and reinforced elbows add coverage and durability when conditions change. Whether you're facing a windy descent or caught in a sudden squall, the WindBlock 1.0 is designed to keep the chill out.