The Rearth Ringke case for the iPhone 4 is a simplistic slim case that is made out of silicone but is also coating with a high polymer coating to reduce the amount of lint and dust from attracting to the case. If you're familiar with cases by SGP, the Ringke feels exactly the same as the Silke R case. The coating works very well and does not attract any lint to itself but because of this grainy coating you lose a lot of grip on the case and that isn't a such a good thing. I'm not a big fan of slippery cases that protect my iPhone 4, and the Ringke is one of them. Another downside to the Ringke case is that it has flimsy sides which tend to flex outwards and not hold their place. Read more for the full review after the cut!