This Hammer Triple Tote is the bag for you. This bag is made for airline travel or tournament/league bowlers. There is also a convenient pull handle to wheel the tote along.
Im a league bowler who at the time when I bought this used 3 balls and had league once a week as well as bowled recreationally 2 or so times a week. This is a good case if you are ONLY storing balls. If you are using three balls and are considering getting this case, I would strongly advise don't. There are no accessory pouches and absolutely no room for shoes if you use all three ball compartments. Its strap also really easily gets caught under the wheel and causes the strap to wear down. As much as I love hammer products (my four balls are all hammer), I would stay away from this case and their rollers as they seem to be of lower quality, this one being no exception. If you are using 3 balls in your arsenal, then you are a serious enough bowler to where you deserve a better roller than this. Look at Brunswick or KR lane lovers products, they're usually of much higher quality.