KidsworldofUSA button down shirt and pants

Has a stain on the right sleeve and cuff and bottom left side of the shirt (front) Measurements Pants (100% Polyester): Leg opening: 12in Inseam: 20 1/4in Waist: 23 1/2in Shirt (Cotton 65%, 35% Polyester): Sleeve: 15 3/4 Chest: 29in Waist: 29 1/2in Shoulder-Shoulder: 12 1/2in Collar to base: 19 1/2