This protective shell wife the contours of the iPhone 5S. The phone does not slip, even if the texture of the silicone has no grip on the sides. The openings are accessible and well cut. All that remains is a kind of air pockets in the back of the hull, but very fine. This certainly reflects the flexibility of the material used. The shell covers the edges of the iPhone screen, which creates a slight thickness which allows for additional protection in case of phone loss, the glass of the screen being the most fragile and very expensive if one must replace !!! In summary, for the price offered by the seller, you can buy this shell eyes closed.