Used only once. I think it's still in good condition. Please only purchase if you understand that it is a used item. It is size M. Please check the size in the images. Reliable thermal insulation This swimsuit was developed in response to requests from swimming schools for a swimsuit with high thermal insulation to keep babies from getting cold. Made of a flexible 1mm thick wetsuit material, it is designed to keep babies warm and comfortable in the water. Babies tend to feel cold faster because they cannot move actively in the water like children over 3 years old. ■ Excellent UV protection With the highest standard UPF50+ processing, you can also use it as a rash guard for water play at home or at nursery school. ■ Surprisingly easy to change The fully openable design makes it easy to change clothes for active babies. Also, the soft finish that fits comfortably on the body is an ideal structure for babies' bodies. ■ Adjustable size The size can be adjusted with the Velcro on the shoulder. ■ Safe for babies with sensitive skin! It keeps the protective cream from coming off, so it's safe for babies with sensitive skin. ■ Safe because it's non-slip and hard to come off even when wet The moderate stiffness of the wear makes it easier to hold active babies, so parents can feel safe. Also, it is designed to be difficult for toddlers to take off when they are moving around in the water or on the poolside. Material: Synthetic rubber, Polyester