Quirky Powercurl - NEW Style V2 Round Power Cord Wrap with Cover for 85w Macbook&reg; Pro 15" & 17" - Clip-on Cord Wrap for Apple - Gray Compatible with 15" or 17" MacBook Pro and 15" MacBook Pro with Retina display power adapters Silicone and plastic materials Provide a durable design. Cord organizer Helps prevent cord tangling. Soft cover Hides messy cords and cables.