It is very simple to attach. In fact, it is as easy as putting on a condom. It should take less than 30 seconds. You simply slide the clip on the shaft back to the base, the spread apart the front loop. Next, wrap the loop around the area behind the head of your penis and slide the clip up. Lastly, attach the back of the shaft to 1 of the 4 included base rings. The below video demonstrates how to attach The ErektorFlex™.