If you don't know where the day will take you, the SmartWool Men's Corbet 120 Vest keeps options open. A Merino lining, wind-resistant face, and heavyweight 120g SmartLoft insulation help you keep a consistent core temp so you can go as far as your legs will take you. Features:Semi-Form Fit Back of vest uses knit fabric that concentrates Merino against skin and nylon/elastane against the elements Merino lined front panel and collar for sweat and odor management 2 secure zip hand pockets and secure zip chest pocket with media cord routing Center front zipper with draft flap and chin guard Machine washableFabric: Front Panel: 100% Polyester Back: 48% Merino Wool/44% Polyester/8% Elastane Lining: 56% Merino Wool/44% Polyester Fill: 75% Wool/25% Polyester