This bike rack is the most unsafe rack I can imagine. I LOST MY BIKE the first time using it! That could have easily resulted in fatalities. The velcro straps on the bottom are worthless and the upright arm has too much wobble. When I thought I had the bike secure, all it took was a bump and it wobbled all over, the velcro failed to hold the bike and it fell out. I had to add washers to the upright arm, straps to secure the wheels, and another strap just to hold the frame on the arm. The only good thing to say about it is that it is lightweight.