Everyday Poplin Shirt Cocoa Stripe by Assembly Label. Our Everyday Poplin Shirt is an essential style in any capsule wardrobe. This crisp cotton poplin shirt is designed for a generous fit with a modern long-line silhouette. Available in classic white or seasonal colours with tonal button details, this long sleeve shirt is the perfect desk-to-dinner style. Designed for a very oversized fit. Downsize if you prefer a standard fit.