STM Dux Rugged Case for MacBook Air 11-Inch - Black (stm-122-094K-01) Super protective polycarbonate and rubberized TPU bracket for even the most accident prone among us Transparent cover to customize your MacBook Air or allow your pristine device to shine through Ergonomic and form fitting design for a comfortable carry and access to all ports Textured rubber feet prevent your laptop from sliding on smooth surfaces Open hinge allows your MacBook Air to breathe and cool itself freely Simple installation with locking clip-on design