This track suit is simply adorable and well made! It is 100% polyester. The logos are embroidered which is important given some of their new products such as the Tiro 17 pants now don a vinyl logo that will eventually crack. I have washed and dried this outfit and it held up perfectly with zero color fade. I own two others as well for my girls that have been washed and dried numerous times and have help up wonderfully. The only downside if this outfit is that it runs VERY LARGE. The inseam on the size 18 months is approximately 11 inches. That is just shy of 3.5 inches longer than the Carters Just One You 18 months pant length. I have shown a picture of both pants so you can see the difference. Both pants pictured are 18 months and have been washed and dried. However, the outfit is adorable. I would recommend sizing down when ordering by at least one size.