Feed Me Nifty Smiley Silicone Case For iPhone 4S/4 - Blue The "mouth" slit opens up just enough for you to stuff things, like credit cards, headphones, USB, etc. Made of high quality silicone which is malleable enough to slip around. Protects your phone from bumps, fingerprints, dust and scratches. Precise cutouts give easy access to all buttons and ports without removing this case.