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: Wenger Men's Diavolo Hiking Boot
Product description: As your feet go, so goes the rest of you--literally and figuratively. When your feet are comfortable, progress is a joy, not a chore. When they have the traction and stabilization they need, that knoll or mountain looks a little smaller. The end of the trail seems a little closer. With this in mind, Wenger created more than another line of shoes. They created multifunctional footwear that, like their Swiss Army knives, prepares you for different situations. For example, they created outsoles that become pliable or harden as the temperature rises or drops for more trustworthy traction in a variety of conditions.
Product feature: 100% Leather, Rubber sole, OutDry extreme waterproofing, Supportive PU Midsole, Package Dimensions: 12 x 8 x 4 inches, Shipping Weight: 2 pounds, ASIN: B003DXAL8W, Item model number: FM9038, Date first listed on Amazon: November 9, 2010, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.2 out of 5 stars 3 customer reviews
Product brand: Wenger
Target attributes: Toe Style
Answer: attribute: toe style
value: None
source: None