I tried it over and under my shirt and nothing worked. But go on google playstore or appples app store and see the reviews, the app is frustrating. It is that distracting! It does hug your curves, so keep that in mind when purchasing. Whenever we got to the Lancelot parts, I felt as if I was suddenly reading a romance novel - and not even a grown-up romance novel, but something along the lines of "Twilight" adolescent melodrama. I wish YardStash had a cover specifically meant for bikes on a bike rack on the back of a car or RV, but this worked well. The second time, I know for sure that I did not make a mistake, I chose the right size of 4 UK Junior and had to get the size of Crocs 36 . Let me explain about Z racks vs normal household garment racks a bit and then I will explain the difference. And I was overwhelmed by the perplexity of choices. Can use it for more than 3 bikes by leaning the little ones against them in the end.