Every style savvy shopper knows that they must invest in the key wardrobe essentials that will last a lifetime (or at least a really long time). The biggest requirement is making sure you have a white and blue long-sleeve shirt that can easily work in a formal or informal environment. The Polo Ralph Lauren Classic-Fit Poplin Regent hits all the marks. This shirt has a medium-spread collar, made of 100% cotton and washed for softness. You can even go all out by having it personalized with the monogramming service that offers many fonts, styles and colors.