The Leatt MTB WindBlock 1. 0 Jacket is a lightweight, wind-resistant MTB jacket for changeable trail weather. It packs into its own chest pocket and straps to the bike, and the 4-way stretch fabric helps shed light rain and trail spray. What Our Gearhead® Experts Are Saying:“I pull the stretch hood up under my helmet on a gusty descent, and it stays low profile, so I'm not fighting extra fabric around my head. The reinforced elbows add material where I brush past branches, so the sleeves hold up.”