The breed has been developed for the extreme Australian conditions since the 1970s, conducted by Professor Ewan Roberts. The Suffolk breed was crossed with white breeds. The Poll Dorset (hornless) and the Border Leicester were the main crossing breeds. They show excellent production results under arid and semi-desert conditions, but also in rainy zones. They are able to have particularly good weight gain even under extensive conditions, kept on grazing land. They are characterized by strong bone structure, balanced frame and excellent meat shapes (mutton conformation). Their maternal traits, such as milk performance, prolificacy and easy lambing, are excellent. They can be mated, lambed all year round. The lambs show a beneficial fat level (proportion of fat and lean) even at a higher slaughter weight. Pursuant to their meat performance, this bread has become the leading terminal sire in Australia. Their prolificacy ranges from 1.6 to 1.9. Mature weights for ewes range from 70 to 90 kg, and ram weights vary from 100 to 140 kg.