Our Thin Blue Stripes shirts have a classic pattern, but with our choice of fabric and design that went into the shirt, you can comfortably wear this shirt to work or play. Details Specially designed to be worn tucked in and untucked There is no pocket and no placket, for a clean, modern, and stylish design Semi-Spread Collar works well with or without a tie Imported Fabric 100% American SUPIMA® Cotton, and 2-ply fabric, for great feel and comfort Size Chart- Alpha Sizing Conversion Alpha S M M L L XL XL Collar 14.5 15 15.5 16 16.5 17 17.5 We work off of collar sizing, so we can offer more sizes, which means a better fit for you. If you go off of alpha sizing, you can see for M, L, and XL, there are 2 options, so you can select the smaller or larger option.