This Detachable Trolley Student Schoolbag Is Designed With Six Wheels, Equipped With Wear-Resistant Shock-Absorbing Tires, Which Can Easily Deal With Various Stairs, Whether It Is Upstairs Or Downstairs, And Can Greatly Reduce Friction And Reduce The Burden On The Shoulders.The Aluminum Alloy Pull Rod Is More Sturdy And Durable, Ensuring A Long Service Life, And It Is Not Easy To Be Damaged Even If It Is Pulled Frequently. The The Outer Layer Of The Schoolbag Is Made Of High-Density Waterproof Material, Which Can Effectively Resist The Invasion Of Rainwater And Protect The Internal Objects From Moisture, Especially Suitable For Students' Daily Use.The Built-In Large-Capacity Zipper Bag Design Can Reasonably Classify And Store Books, Stationery, Electronic Equipment, Etc., And The Space Layout Is Reasonable, Making Your Items Organized And Easy To Access. In Addition, The Design Of The Schoolbag Pays Attention To Comfort And Practicability, And The Carrying Part Is Made Of Breathable Material, Reducing The Carrying Pressure, Suitable For Long Time Carrying.Whether It Is For School, Traveling Or Daily Use, This School Bag Is An Ideal Choice.