This is a variable product called a Proteus Fitness Jackshirt

Part jacket, part shirt, the Proteus Fitness Jackshirt makes an ideal companion for outdoor training, camping or loafing on crisp days. Natural Cocona® technology brings breathable comfort and increased dryness along with UV protection and odor management. The drop-tail hem provides extra coverage when you're riding a bike or replacing a sink valve.

• 1/4 zip. Stand-up collar.
• Machine wash/dry.
• Quilted inner layer.