I've worn this about twice, but it no longer fits, so I'm selling it. You can adjust the fit with the ribbon tie in the back. I think you can wear it from spring to autumn by changing the innerwear to short sleeves or long sleeves^_^ The size is listed as 6-12 months, and I've listed it as 80cm just in case. Since it's a foreign product, there were originally some loose threads and rough stitching. Please purchase only if you understand that this is a used item and has been stored at home. Please read my profile. Baby Korean children's clothing Rompers Floral