Girls White Eyelet Ruffle Seat Panties. Rumba seat panty of poly/cotton blend, with eyelet lace ruffles on seat. Inserted waist elastic. Easy care, washable poly/cotton. Sizing help in description below. Sold as 2 pack per size only. Sizing help: Size 1 = Small 0-6 months ...used over diaper, if used as pantie, fits 22-24 lbs. or 1 yr. Size 2 = Medium 6-12 months ...used over diaper, if used as pantie, fits 25-28 lbs. or 2 yrs. Size 3 = Large 12-18 months ...used over diaper, if used as pantie, fits 29-32 lbs. or 3 yrs. Size 4 = Xlarge 18-24 months...used over diaper, if used as pantie, fits 33-36 lbs. or 4 yrs. Size 5 = 39-41 lbs. or 5 yrs. Size 6 = 42-53 lbs. or 6 yrs.