Incipio and Alpinestars have teamed up on two cases for the iPhone 4: the Tech 10 and Bionic.

The Alpinestars TECH10 Motocross boot is a motocross boot. The $24.99 Tech 10 iPhone case shares DNA with the TECH10 boot and is intended to provide the same amount of performance and protection.

The $34.99 Alpinestars Bionic Jacket (pictured) is engineered to provide maximum protection against the brutal forces of motorcycle racing. The Bionic case for the iPhone 4 borrowed design cues from the Bionic Jacket and shares its impeccable protective nature. For more info go to .