This FlexiShield case is of soft gel like material and keeps your mobile steady in your hand. This case does protect your mobile from getting damage if you drop it on the floor, which mostly happens when it's connected to your computer. When you hold it in your hand it, you don't drop it. Samsung Galaxy S4 is a big mobile, so a protective case is a must.
I have two years of experience of this brand, since my former mobile, the Samsung Galaxy S2 and I must say I really recommend this case. For a reasonable price you get a perfect case for your mobile.