I no longer need it. It was a gift and I only used it a few times. The width can be adjusted with the snap at the bottom. I think it can also be used to protect against air conditioning when you're out and about ^^ The size is listed as free (70-90), so I think it's about 80cm * <Description> This poncho has a UV cut function with a UV protection rate of 90% or more, protecting your baby's delicate skin from UV rays. Made of 100% cotton, it can be worn by both boys and girls. It's easy to put on and take off with the front buttons, and you can wear it without putting your arms through, so you can use it for a long time from when your baby can sit up to around 2 years old.