The aluminum used in this product is limited to the thin outer layer. Everything else is plastic, therefore feels the complete presentation of the battery cover as overpriced and inferior. The aluminum itself is not nearly as polished as in the picture. It is rough and feels unrefined. I tried it with a gray Galaxy s3 and recognized for me that it is with this colorful color choice. I myself am again switched to the normal shell, as this looks much more exclusive and smartphone taxed a handier size as the normal shell is thinner than the aluminum lid. Many subjective impressions, but price and processing of the goods are really insufficient.