Colette Negroni Men's Shirt Pattern, Description: From Colette, this pattern includes pattern pieces and detailed instructions for making your very own Walden shirt. This shirt features a convertible collar and midcentury style collar loop detail. The back is shaped with a yoke and two pleats. Version 1 has long sleeves finished with a placket and cuff. Version 2 has short sleeves. Sizes range from XS-XXL.