I was on a major roadway going about 45mph, and the cross bars popped off my car, causing the kayaks to fly into the road, and scratch up my car. They are really cute and comfortable that way, but dont necessarily plan to use it as a back strap. They are as I expected them to be. Sie sind cool und der nächste Urlaub / Sommer komme bestimmt . The Zodiac Academy is something . Granted I did have them as loud as possible but to go from 8hrs estimated to 2hrs of actual use put a big damper on the party. Does it bother me $50 worth?? No. * Im not sure what to say about the electronic noise cancellation, but the world is completely silent with these on. Very very easy to walk in, especially given 6” heel. Looks good on all my shelves, great addition in gallery cabinets