Number Flash Cards Are Basic Mathematical Tools That No Teacher Or Educator Should Be Without Package Dimensions :2.0" L X2.0" W X2.0" H Country Of Origin :China Boldly Numbered From One To One Hundred In Leak-Free Black Ink, Our Math Flash Cards Are Made From Durable Card Stock Paper Easy To Grab And Hold - Made From Medium-Weight Card Stock, These Number Cards Are Smooth And Clear, Easy To Handle And Easy To Read. You Will Get Lots Of Use Out Of Them During Your Young Ones Early Stages