Cheap but not cheap, it is for me the perfect cover: retractable handles, front pocket for charger, using the handles can pocket for storing the mouse, can use the computer while still in its case ( on the train or on the knees, for example).
Protection is excellent (shape memory foam) and is optimized and compact, discreet, robust and perfectly finished.
There is (much) more expensive, but believe me it will be worse than this cover PERFECT!