yes swallow does have class tires. Unfortunately, these tires meet the statement of Schwalbe not Flat-less, but still more durable than the competition. With me so holding a tire on the rear wheel about 5 - 7000km if I'm lucky, so I need usually 2 per year. At the front, he holds a little longer. But I would not buy any other brand more, so I've only had bad luck and who have mostly given up the ghost after 2000km.
