A DRESSWEAR STAPLE: Our Calvin Klein Long Sleeve Slim Fit Dress Shirt is a classic boys wardrobe staple. Featuring a button-down style with buttoned cuff detailing, shirttail hem, two extra buttons, and a touch of stretch, this shirt is perfectly coordinated to accompany any dress pant. PREMIUM QUALITY: We use high-quality materials in all our kids clothing to ensure maximum comfort, longevity and lasting power. SIZE GUIDE: Available in Little Boys’ sizes 4 to 7, and Big Boys’ sizes 8 to 20. CALVIN KLEIN: Founded in New York in 1968 and recognized worldwide as a premium fashion lifestyle brand, Calvin Klein elevates everyday essentials to globally iconic status. Our modern and minimalist approach to design, and authentic connection to culture has resonated across generations for over 50 years. Kindly check and measure with Size Chart before selecting size