WHITE BLACK DUO-SHIELD SOFT RUBBER SKIN HARD CASE COVER FOR APPLE iPHONE 4S 4 4G Hard Plastic on the inside and Soft Silicone on the outside. Edges are reinforced for more protection. Surface covered by layer of silicone and added side grips to provide better grip and protection. 2 Tone coloring provides a more stylish look! Pre-cut openings allows full access to all of the iPhone 4 and 4S's functions.