This is an older-style baby carrier that doesn't have adjustable sizing ♡:*:・(*´ω`pq I was able to continue using it in the same size even though my weight changed after giving birth. It was very convenient for quick use when the baby was crying in the house, when putting the baby to sleep, or when going out for a short time ♡ The baby chews on the fabric, so I prepared spare ones, and I'm also selling those, so please take a look. (I'm also selling a size S gray one)