They'll be able to see you coming when you're wearing this jacket! The Trek Visibility Jacket is made of windproof, water-resistant, breathable Silmond fabric. It has a cycling-specific cut with long sleeves and back panel, and a high collar. The full-length zipper cover helps keep the wind out and the warmth in. Mesh underarm panels improve venting and breathability. This lightweight jacket easily stuffs into a back jersey pocket.