The first set is the size 4T. It is made out of a spaceship themed french terry. I found this fabric at The Fabric Fairy a couple of years ago. It should be nice and warm for the coming winter months. The cuffs and neckband are made from a quality cotton ribbing with spandex so they retain their shape really well. I used my coverstitch machine to hem the top and topstitch around the neckline.