- Polo Ralph Lauren Kids - Girls' Size Guide - Polo Ralph Lauren Kids - Boys' Size Guide - Polo Ralph Lauren Baby Size Guide - A staple of warm-weather style, this Polo Ralph Lauren® Kids Linen Short Sleeve Shirt is washed for enhanced softness and embroidered with our signature Pony. It has a button-down collar, short sleeves, box-pleated back yoke, and a curved hem. - Regular fit. - Buttoned front closure. - 100% linen. - Machine washable. - Imported.