DataPool is a data sharing bucket that allows you to share with your family members and across devices, and can also be used overseas. For example, with Maxis Postpaid 128, you get 60GB of data into your DataPool. The 60GB that goes into your DataPool is shareable with your family members and across devices with Maxis Postpaid Share.
For each Maxis Postpaid Share you will get an additional 30GB. That is a total of 90GB in your DataPool, shareable with your Maxis Postpaid Share line and you can use all this data overseas with MaxisONE World.