It's Asian size，please check the detail sizer on the size chart image.Material: Cotton Blend and DenimColor: Gray and BlueNeck: O-NeckSleeve: SleevelessPattern: PrintStyle: CasualDesign: LeisureStyle: 3PCS Outfit SetsTops Style: Tank TopsShorts Closure Type: Zipper and ButtonDecoration: PocketsFit Style: SlimHeadband Dimension: 34-48cm/ 13.3-18.7'' (Head Circumference)Department Name: ChildrenOpportunity: Casual， EverydayNote:1. Hint for choosing proper size， use similar clothing to compare with the size.2. Choose larger sizes if your size are same as the flat measurement Size chart.Size: There are 5 sizes (90/100/110/120/130) available for the following listing. please allow 1-2cm differs due to manual measurement， thanks (All measurement in cm and please note 1cm=0.39inch)