Advantages: added some protection to my MacBook without creating any discomfort, although it may slightly interfere with some devices connected to USB, HDMI and Thunderbolt ports. The bumper also allows an easy and comfortable grip on the machine when it is transported by hand. Offers good protection in case of accidental fall.
Disadvantages: Must be assembled by the user.
Conclusion: Overall, this is a good deal and did the work. However, for a little more, you will have a better quality and no need to assemble it yourself.