noun
sunsuit
A one-piece or two-piece garment designed for sun protection, often worn by children or for beach activities. The term is a direct loan from English and is used in Japanese with the same meaning.
子供用のサンスーツを買いました。
I bought a children's sunsuit.
ビーチでサンスーツを着ている人が多い。
Many people are wearing sunsuits at the beach.