Wear them a lot! ?? Spedizione: L?acquisto che cercavo da tempo! I cant go back watch keep hanging. These are major inconsistencies but minor to when it comes to the quality of sound. I assumed it was metal or plastic as the fabric does look like metal in pictures. The crossbars are very strong, easy to install and I could tighten them very securely to my side rails because the mounting brackets shape very closely matched the shape of my side rails. the quality! I should have left them home. The one fall I took could have been really bad, for both me and my daughter. I have my sunglasses, car keys, a tool to inflate the bike tires and some cash.