These Berkshire Silky pantyhose are model 4428 and the queen size of the same product is model 4489. These are 20 denier, have control top, a silky leg, and a reinforced toe. Berkshire is known for having a good control top. These are a nice option for those that want something thicker than 12 denier but thinner than 30 denier. 84% Nylon, 16% Spandex, cotton blend crotch.