Hello, I'll be getting my phone soon, and all I want to do is to keep it alive and in excellent condition for +2.5 years as I did with the Mi2. I've been looking at a lot of covers and screen protectors products, and the tempered glass metal bumper got my attention. It's very cool to look at and it make the phone even sexer. The cover priced at $21.99 and it seems like it worth it. The back of the bumper is tempered glass and the rest of of it is aluminum. You may take a look here "http://www.ebay.com/itm/291244140052", and please advise me if it really worth the $21.99, or the $3.99 silicone bumper will do better in protection.