NORSE PROJECTS Leif Cotton Linen Polo Clay. Regular fit S/S Polo made from cotton/linen blend yarn knit which gives it a cooling comfort. 55% Linen 45% cotton. The natural properties of the linen fibres allow heat to escape, making it the perfect choice for summer. It is knitted in plain jersey and features a knitted collar with an open placket and single ribbed cuffs and hem.