Why "Zero"?Zero Series are the thinnest genuine leather cases ever made in the market. Beyzacases quality meets with magnificent art of traditional leather craftsmanship and the engineering of Beyzacases artists."Zero" term comes from the thinness of the craftsmanship of the Zero Series which does not add any bulk to your carrying experience in any terms. Zero Series for iPhone 4S can be carried in your bag or pocket without any fear of thickness. World"s thinnest leather case "Zero Series" for iPhone 4S provides you an amazing protection while secures your iPhone 4S in this awesome design.The bottom opening for easy device removal helps you to remove your device with just one little move.