TopOfStyle offers you an enormous range of designer shirts for toddlers, tweens, and big boys in fabrics like cotton, silk, denim, etc. U.S. Polo Assn. is an American clothing and fashion apparel brand that manufactures t-shirts, shirts, dresses, beachwear, handbags, and much more for women, kids, and men. The gray color is linked with maturity and protection. U.S. Polo Assn. Gray Shirts & Tees for boys is available in patterns like Graphic and Solid.