The Rier Polar Shirt is a versatile piece from Rier's athletic outerwear collection, designed for comfort and style. It is part of a new line of interlock jogging styles made from 100% natural materials, perfect for layering or wearing on its own.

• Made from 100% natural interlock jersey material
• Crafted from extra fine wool yarns
• Produced by a historical 19th-century Italian manufacturer
• Features natural stretch and resistance to deformation
• Offers temperature-regulating qualities
• Requires less washing and is micro-plastic free
• Colorway: Black