Product name: 3-piece backpack, messenger bag, pencil caseoptionalBackpack detailsMain material: polyester canvasGender: Neutral, boy/girl/teenager/man/womanInterior: indoor compartment, mobile phone pocket, computer mezzanineFunction: school bag, laptop bag, travel bag, sports bagSize: 44CM*28CM*13CM (1 cm=0.39 inches)Shoulder bag/crossbody bag detailsInside: Internal compartment switchType: ZipperHardness: SoftStorage: mobile phones, books, mirrors, wallets, etc.Function: school bag, daily satchel, travel bag, school bag, snack bagSize: 25cm * 19cm * 8cm (1cm = 0.39inch)Pencil case/stationery bag/pen bag detailsClosure type: zipperSize: 22 cm * 11 cm * 5 cm (1 cm = 0.39 inches)Uses: pencil boxes, pencil boxes, pencil boxes, pencil boxes, ruler eraser holders, etc.Please allow (1-3cm) error due to manual measurement, thank you for your understanding