There is an adjustable waist elastic. Considering the color, it's for girls, but since it's a part that's not visible when worn, I think it can be used by both boys and girls. Color: Blue Pattern/Design: Solid Pant Length: Full length Material: Cotton stretch Silhouette: Straight Hem: Cut-off hem Center Press: No center press Rise: Regular Bottom Waist: Elastic and drawstring Season: Spring, Summer, Autumn, Winter