The proprietary design does not require any adhesive or alteration to the body of the MacBook to attach this custom Ledge Lock. <br><br>The slim design of this extremely secure lock slot adapter integrates seamlessly with MacBook’s minimalist appeal and is ultra-lightweight at less than 0.1lb so it adds minimal bulk and allowing for the MacBook to fit in a sleeve or bag.<br><br>MacBook Ledge Includes:<br>- Ledge Lock Slot Adapter<br>- Installation Hardware Kit