Select the right size for your charger holder: The Mac charger cord winder comes in four different sizes to fit various MagSafe, Macbook, Macbook Pro, and Macbook air chargers. Small (S) fits 29W, 30W USB-C. Medium (M) fits 45W and 70W MagSafe. Large (L) fits 60W, 61W and 67W MagSafe and USB-C. Extra large (XL) fits 85W, 87W, 96W MagSafe and USB-C. Cable management for Mac that works: Declutter your cords for faster set up on the move with the HumanCentric Macbook charger organizer. Eliminate tangled power cords and laptop accessories clutter on your desk and in your computer bag or briefcase storage. Quickly unwind to get to work or wind up to go. Portable charger protector: Easily reel your Macbook charger in seconds into a compact case that fits neatly in bags and backpacks. Ideal for organizing Macbook Pro and Macbook Air cords for travel, school, and business. Extend your Mac charging cord to only the length needed for the job. Compatible with original Apple USB-C and MagSafe cables: The HumanCentric Mac charger cord winder is compatible with the orginal USB-C and MagSafe cables that come with your Macbook, so you don’t have to use a non-Apple cable that is prone to breaking over time. Important note: Does not include the Macbook charger or extension cable, those items can be purchased separately. This winder only works with a charger with the extension cord. Make sure you choose the right size for your charger. HumanCentric Cord Winder Macbook Charger Organizer, Cable Reel for Macbook Chargers, Travel Mac Charging Case for 85W, 87W, 96W USB-C and MagSafe, Apple Pro + Air Power Cord Storage, Extra Large