They're not made from Kangaroo Leather. They have Tour Ultra fit, finish, and comfort without the cost of Kangaroo. They don’t come with all the extra accessories (shoe horn, bag, shoe covers, and not as many heel/sole combinations). That's why they cost less.
Actually the sport series is a better deal because all the additional accessories are available separately. Most (I would say at least 85%) bowlers only use 1 or 2 heels/soles anyhow. You are better off going with the less expensive shoe and buying the adjust-a-heel and a couple soles. The only other accessories I use with my Ultra's are the shoe cover. The bag sits in the closet holding the shoe horn and form keepers.
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Todd
Bandit Lanes Pro Shop
Ellsworth AFB South Dakota
605.385.2536