Ordered a set of maxtrax from alliance off-road. We had a trip planned for the Grand Canyon and the tracking said they would be delivered by 9pm the day we wanted to leave. I decided not to check the tracking with two days to go until scheduled delivery. Hoping not to jinx myself. It worked. They arrived around 1 pm and we were smiling. We are using a 2015 Mercedes Benz GLA 250 4 magic. Thanks to the Maxtrax boards the bottom of the car never touched a thing. I kept them zip tied together at the ends and added two more so all 4 corners were zip tied. Very pleased with ease of use and performance. Thanks Maxtrax and Aliance off road.