Many years ago most of luggages are install 2 pcs of luggage casters wheels.Then are only move in a straight line. And we are usually pull the  luggage in front of luggage. So we do not need to carry the case walk long  way.That's bring passengers great convenience.

       But sometimes people also find the this case structure bring us trouble

* When we pull the case,Walk Too Strides will cause the heel run into the  luggage case frequently

* Height people need bend body to pull the case,that's would be harm the waist

* The umbrellas can not cover both people and cases at rain weather

* As we can not see behind cases ,safety also a big problem

      And once we can mount 4 swivel luggage wheels at the bottom of  case.The case will be allowed moving flexible in any direction .High center  of gravity casters make the case more suitable for deep water road use.

     An high quality luggages can improve entire luggage's classes

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