MATERIAL: This kids unicorn onesie pajamas is made of high-quality Flannel fabric.Warm and comfortable. | SIZE INFORMATION: 2-4 years is suitable for height 37”-41”,4-6 Years is suitable for height 41”-45”, 6-8 years is suitable for height 49”-53”, 6-8 years is suitable for height 49”-53”, 10-12 years is suitable for height (53”-57”). | EASY TO PUT ON OR TAKE OFF:Front zipper/button design, Back zipper design,easy to go to toilet | OCCASIONS:Homewear,Halloween,Christmas,Thanksgiving Day, Cosplay, also Sleepwear. | CLEANING : The cotton material is recommended to be hand washed or machine cold. If ironing is required,Recommend to do so on Low heat only.