The good parts-
Soft and grippy to touch, extremely slim and keeps the contours of the original phone, appropriate ring around camera for protection, button cuts/holes perfectly aligned and buttons work easily with minimal effort, build quality is much is a lot better than numerous other cheaper or similarly priced covers available online.
The not good parts-
Fit should be tighter around the edges as the cover splits away from the phone body from the sides when even a little pressure is applied, perhaps better quality liquid silicone will be a solution.
The buttons are highly protruding outwards to the point that they ruin the sleek look of the phone. I'm personally not a fan of those at all (including the button colour) and find them completely unnecessary. The iPhone has amazing buttons by itself, instead adding over them with cover buttons, better to leaves slits for the original ones, just like it has been done with the mute button. I even removed the buttons but the protruding silicon around them makes it harder to press the phone buttons.
In all the cover is good if you don't mind the buttons, has potential for improvement in my opinion, even if the price is raised a bit.