The MST Windproof Softshell Vest is designed with expert-level functionality. It is made of 100% Polyester Tech Shell with a 100% Polyester Bonded Grid-Fleece Lining with Windproof Membrane. It features Magnattach™ Vertical Left Chest Pocket and Zippered Vertical Right Chest Pocket for secure storage, plus Zippered Lower Slash Pockets and Drawcord Waist with Cord Locks for a customizable fit. Its 4-Way Stretch and Grid-Fleece Collar Lining offer superior comfort and breathability.