The Sequential Brands Group, which is under strong pressure to pay back its debts, said it has sold the Heelys brand of wheeled shoes to BBC International, a U.S. company specializing in children’s footwear that has been Heelys’ core licensees since 2013, when Sequential bought the brand for $5.5 million. Heelys was one of the relatively successful active sports brands of the group, along with And1, Avia and Gaiam. It was put up for sale as part of an ongoing “exploration of strategic alternatives,” including the sale of the whole group. Sequential said that most of the proceeds from Heelys’ sale will be used to pay down debt.