This pair of boys pajamas from the Avengers comes in 2 pieces. The pajama set features a round neck and a pullover closure. It has a long sleeve flannel material top with the cartoon character Nemo. The lightweight warm flannel material of the top makes it great for the winter and fall seasons. The comfortable pajama pants come with cartoon character prints and are perfect for a good night's rest. This set is machine washable and available in size 3