They came with multiple rubber sizing for good fit in your ears. My 13year old word these around the house for a week before one of the straps broke. I saw them originally in DSW and they were 30. I was able to hang at different heights to make it easier for the kids to hang their bikes. I wouldnt recommend this for free. I am soooooo happy with these shoes! After the right channel cutting out so much i just couldnt take it anymore. Much better price than many we considered. Fortunately, the metal frame can be drilled to accommodate mounts in alternate locations. Muy buena calidad, duracion de bateria hasta 5 horas de uso continuo, la calidad del audio es malo inclusive al encender/apagar el sonido de bienvenida la calidad es muy baja, usando alguna aplicación para modificar la calidad del audio mejora bastante, ademas me hubiera gustado que incluyeran un estuche ya que traerlos en la mochila se activan constantemente y cuando necesito usarlos la bateria esta gastada.