What material is this iPhone case made of?

I found this iPhone case that I would like to buy, but I don't want to buy another silicone case. Does anyone have it? The name of the case is "Music Monsters, A lot of them", and I found it on this Swedish site: http://www.teknikproffset.se/MOBIL/Apple-iPhone/Baksideskal/iPhone-4/Music-Monsters-design-skal-till-iPhone-4--4S--A-lo.htm. If you don't want to click the link you could just google the name.

I think it's made of silicone, so what kind of you would like, metal? If that, you can consider this similar style one but made of metal.

This case is really cute. I think it is made of Silicone. If you don't want to buy a same material case. You can try this.
http://www.case2case.net/face-iphone-4-4s-case-mirror-cute.html
It is also very cute and Made of high quality material: ABS+PC.