This screen protector's unique material can Protect your IPOD NANO 4 against scratching and abrasion.It can enhances your screen by reducing the distractive glare that is caused by reflected light. The surface is not textured like other screen protectors, so the smooth feeling of your IPOD NANO 4's display is left unchanged. The Screen Protector is very easy to apply and remove. It can be removed without leaving any residue mark. This kind of screen protector can resistant to erosion and finger-printing.