The rack secures the two bikes nicely at highway speeds and removing/installing the rack takes just a few minutes once you get used to it. The sole is thin and hard, again unlike any Adidas sandal Ive ever bought. We took it down the River Tubing and put our food in it because we needed a bigger cooler for our alcohol but we take it on our golf cart and put it in our pool with drinks in it, it holds ice well and again the sound rocks! She has really "thick" feet and I was worried they wouldnt fit, but they worked out great! She wore them for 4 days in DisneyWorld and they still look good as new. Will most likely be back to get another one or two for my husband, "just in case. They were designed with little ones in mind so they have a stretchy top which allows their feet to slide in easier, a pull tab on the heals and a cute little unicorn design inside the shoes that has the head and front legs inside the left shoe and tail and back legs in the right shoe so they know which shoe goes on which foot! ) without feeling barefoot. Great to use working out, working in the yard, traveling through the city, while shopping, etc! Thoroughly cleaned and let door surface dry as well as cleaning the backs of the clips to remove any residue of previous adhesive.