Assembly was relatively easy considering the terrible instruction manual. I received the wrong mouse feet,I received the mouse feet for the viper mini not for the normal viper like I was supposed to Dont trust them unless they wore the sandals at least 3 months. After using it for about a week, I still would not pay full price, but I am keeping it. Other pros:10 cord! Now that I’m home I will order them in another color. These are cheaper than OEM that is for sure. Its integration with S4B is seamless and elegant. I would never trust this to hold in my hitch. Rubber bottoms help prevent slipping.