I bought this from TAMS, an online baby clothing store. I dressed my child in it a few times for events like their first meal ceremony, shrine visit, and entrance ceremony, but I think knit rompers can be worn regardless of the season or occasion. The tag says size 66cm, so I've listed it as size 60, but I personally think it runs a little large, so I believe it would also fit children wearing size 60-70. I would appreciate your understanding that it has been washed and stored at home. I am selling this as a set, but please let me know if you would prefer to purchase it individually.^_^