This onesie is so soft and adorable they will want to continue to wear it throughout winter even after Halloween! I have 3 of these in size 2-3T in case your child's friend/sibling wants to match them. I also have this costume in more sizes (6-12 months, 12-18 months). Please see pictures for sizing chart and more details. Please feel free to let me know if you have any questions or would like more pictures. Check out my other listings for more costumes!