This was easy to use, being a T-shirt material made of 100% cotton. It can be worn in two ways thanks to the buttons in the crotch area. I only used it when my baby was about 2 or 3 months old. There is a faint stain on the neckline. See the red circle. I haven't used bleach, so it might come out, but please be aware of this. - Size: 50-60 cm - Weight: 3-6 kg - Material: 100% cotton Thank you for looking. *Please read the profile before purchasing.*