rectangular design painted on a blue fabric, possibly a t-shirt

rectangular design painted on a blue fabric, possibly a t-shirt. The design depicts three half-slices of citrus fruit arranged in a rectangular frame. The top slice is centered, while the two lower slices are placed side by side. The slices are rendered in white with internal details of segments and rind. The rectangular background of the slices is a darker blue, providing contrast. There is no indication of the location being Saarbrücken, Germany.