Pro Retina 15" Rubberized Black cover, no lock and works with any universal cable lock. It incorporates a neat cover that also protects your MacBook Pro Retina via an integrated built-in security slot that can accommodate any of the standard cable locks sold on the market. That way you can lock the security cable to the case, and loop the cable's other end around a fixed object (like a table). Once the case and cable are locked together, thieves can't detach the case without damaging the MBP Retina. This makes the MBP Lock flexible and light, not to mention stylish, so you can easily pack it in your bag and take it with you wherever you go. The MacBook Pro Retina Lock and Security Case Bundle Includes: MacBook Pro Security Cover