He wears  a soft full-body yellow onesie type of suit that has a white zip on the chest area. It also has a huge white cape that attaches to the suit from big black buttons on each side of the shoulders. It also comes with two dark red rubber gloves with matching boots. Equipped with a black belt with a good metal buckle on the front. When Saitama is casual, it hides his muscles, giving a baggy look to it - but when Saitama is serious, the suit gets really tight around his body muscles 