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: Cole Haan Men's Air Scout Chukka Boot
Product description: With nearly 80 years in the business and hundreds of points of distribution in the U.S., Cole Haan is one of America's premier luxury brands. Founded in 1928 as a collaboration between Trafton Cole and Eddie Haan, Cole Haan epitomized artisan quality and impeccable craftsmanship during a time when style was everything. Originally, Cole Haan was a men's footwear label that captured the essence of the 20s spirit with beautifully-designed and well-made shoes for the dapper gentleman. Today, Cole Haan brings that heritage to all of its products, including men's and women's dress and casual footwear, belts, hosiery, handbags, small leather goods, outerwear and sunglasses.
Product feature: 100% Leather and Fabric, Rubber sole, Shaft measures approximately 4.75" from arch, Heel measures approximately 1.25", Boot opening measures approximately 12.5" around, Concealed NIKE AIR Technology, Package Dimensions: 13.2 x 9.7 x 4.9 inches, Shipping Weight: 3.5 pounds, ASIN: B0074O1BZI, Item model number: Air Scout Chukka, Date first listed on Amazon: October 6, 2012, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.3 out of 5 stars 5 customer reviews
Target attributes: Shaft Height
Answer: attribute: shaft height
value: chukka
source: product title
attribute: shaft height
value: chukka
source: product feature