That is designed to be a duffel bag, not a bowling ball bag. While it is obviously large enough, BB bags are usually made for more convenience and with certain internal reinforcments to deal with the weights and their shifting around. Most bags for 2 or more balls also have wheels, also designed to deal with the added stress.
While you can certainly use the duffel bag to carry balls, for many reasons, I'd urge you to consider a purpose built bag.
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"None are so blind as those who will not see."
