Our pajamas are made of 100% super soft supreme quality cotton. Sizing starts at 18 months and runs until 8 years of age [see sizing]. Available in 5 trendy colors! The smallest size has buttons on shoulder for easy fitting. You can combine the colors of the pajamas (shirts and pants) within the same size range. Pajama top and pants are available as a set only. The pajama top can be personalized with your own text and/or any illustration!