The Bontrager Circuit Convertible Windshell keeps you comfortable on the bike no matter how far you go. Its lightweight, breathable fabric shields you from wind and light rain, while allowing excess heat and moisture to escape so you stay dry. Wear it as a jacket on chilly morning rides, then unzip the arms when you start to warm up for a relaxed vest-like feel. Stash it in your jersey pocket until clouds roll in again. With its versatile convertible design, this windshell has you covered through variable weather on all your cycling adventures. Functionality: Convertible sleeves zip off for vest-like versatility Performance: Lightweight, breathable fabric blocks wind and light rain Comfort: Mesh lining and venting promote airflow to prevent overheating Fit: Semi-form fit delivers a streamlined, performance-oriented cut Visibility: Reflective trim enhances low-light visibility for safety Packability: Jacket stuffs into rear pocket for easy carrying