The shell is tailor-made and my MacBook Air 13 "fits like a glove into the protection is sufficient to inadvertently place the MacBook on a tray The anti-slip material prevents slippage on surfaces, which slippage is significantly reduced -.. Comes naturally to the material it to. Flat surfaces are easily slip. A fall with the shell of the hip could be dangerous, as well, the upholstery is not, this one would need another shell. Now that I have not looked for a fall solid copy, this is perfect for me . The design is awesome, a lot of friends ask me about it and recognize only after extracting the MacBooks, that this indeed is a shell. In the business environment, the design could be inappropriate depending on the industry, but which must also each decide for themselves . The magnetic lock works reliably. Those looking for more exclusive ones, which is hereby incorporated have his true joy.