I cant install without all 4 pads. I used the pad that Rightline Gear sells to prevent damage to the roof of the car. Cumple con su función de protegerlo y me gusta el diseño For 1 he was putting it on backwards. Kleiner Tip vielleicht noch; gönnt ihm eine längere Einspielzeit. Tried to put a small round corn pad under the strap where it rubbed and even when able to keep it in place, rubbed my toe to the point of bruising. Harder than stride rite soft motion but softer than their next up walker. FitFit as expected, based on an informed decision:If you have never been fit for running shoes before, you may be disappointed. Watch out with drywall because the adhesive is very strong and could damage the surface when removed or if you hang stuff thats too heavy. (JBLs sound signature) I can understand why JBL did not go with stereo drivers (Flip 4), but instead went with a single (mono) more powerful driver.