A cable manager which secures cables and constrains their movement in a controlled fashion. An example cable manager includes a flexible sheet. The flexible sheet includes a support section for supporting a cable along a portion of a length of the cable, the support section including a first end and a second end. A first cable retainer section wider than the support section is adjacent the first end, the first cable retainer section including first retainer sides which interlock. A second cable retainer section wider than the support section is adjacent the second end, the second cable retainer section including second retainer sides which interlock, and the second cable retainer section being separate from the first cable retainer section.