Double Sided Flexible PCB, also known as back bared flexible pcb, are Flexible PCB with a single conductor layer, but are processed to allow access to selected features of the conductor pattern from both sides. An example of such a feature would be a lead termination. While this type of Flex Printed Circuit has a number of apparent benefits, it is not as commonly manufactured as single sided flexible pcb. This is because the special processing required to provide access to the features discretely, although laser technology is certainly well applied to the task. Finally it is important to note that TAB circuits have long taken advantage of the method.