The front lever to back lever transition is the ultimate demonstration of straight-arm control. You rotate your body from a front lever position to a back lever position while maintaining control. It demands strength in both lever positions plus the rotational control to move between them. You'll start with skin the cat progressions, master both levers independently, then work on slow transitions. This is an elite-level skill. Most athletes take 6-12 months of dedicated work to achieve a controlled transition.