Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: iSkin ISKVBSN4GIY Vibes Clear Skin Protective Bodyguard for iPod Nano 4G - Ivy
Product description: Of course, fun and style are what you crave, but you don't want to sacrifice protection and with the Vibes clear skin protective bodyguard, you won't! Add an amazing splash of fun and style to your iPod nano 4G with the fashionably Ivy pattern. Designed to enhance your beloved device's natural beauty. The soft, robust material perfectly hugs your iPod nano 4G and delivers essential device and screen protection, while a firm, clear adhesive-free attachment guards your vulnerable click wheel area. And for added functionality, the iSkin Vibes comes with a clear port cover, and a dock adapter for the Apple universal dock. Docking port protector to prevent dirt, dust and other hazards Firm clear adhesive-free attachment that guards vulnerable Click Wheel area iSkin specific dock adapter (included), for Apple Universal Dock or accessoriesiPod not included
Product feature: Soft, flexible feel combined with a stunning glass-like finish, Everyday protection against impact, scratches, dirt, dust, and more, Odorless, Heat and cold resistant, Integrated clear screen protection helps prevent scratches, scrapes, smudges and more
Product price: $5.54
Product brand: iSkin
Target attributes: Compatibility
Answer: attribute: compatibility
value: for ipod
source: product title
attribute: compatibility
value: ipod
source: product description