Complete new version of the classic BookArc from Twelve South. New even more filigree and lighter with beautifully shaped lines. Compatible with MacBook 12, all MacBook Air (11" - 13"), and all MacBook Pro Retina (13" - 15"). BookArc is a MacBook stand in an exceptional design, made from a powder-coated piece of steel to perfectly enclose Apple MacBooks and create a tidy workspace. Place your MacBook in the soft, silicone-edged recess of the BookArc, plug in your monitor, external keyboard & mouse, and your laptop has become your desktop computer.